You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@isis.apache.org by ah...@apache.org on 2018/09/14 09:08:46 UTC

[isis] 01/02: ISIS-1976: further remove guava idioms from MM ('Lists')

This is an automated email from the ASF dual-hosted git repository.

ahuber pushed a commit to branch ISIS-1976-rethink-object-adapters
in repository https://gitbox.apache.org/repos/asf/isis.git

commit 4572450efcb2e19ba6d45822e2426cf68a39050e
Author: Andi Huber <ah...@apache.org>
AuthorDate: Fri Sep 14 09:49:02 2018 +0200

    ISIS-1976: further remove guava idioms from MM ('Lists')
    
    also in MM remove unused imports from Java classes
    
    Task-Url: https://issues.apache.org/jira/browse/ISIS-1976
---
 .../isis/commons/internal/collections/_Lists.java  | 20 ++++++++++
 .../AuthenticationSessionAbstract.java             |  4 +-
 .../core/commons/authentication/MessageBroker.java |  6 +--
 .../core/commons/components/InstallerAbstract.java | 15 +++++---
 .../commons/config/IsisConfigurationDefault.java   |  4 +-
 .../configbuilder/IsisConfigurationBuilder.java    |  9 +++--
 .../PrimerForEnvironmentVariableISIS_OPTS.java     |  5 ++-
 .../isis/core/commons/encoding/FieldType.java      |  3 +-
 .../isis/core/commons/lang/ArrayExtensions.java    |  9 ++---
 .../isis/core/commons/lang/ClassFunctions.java     |  4 +-
 .../apache/isis/core/commons/lang/ClassUtil.java   |  4 +-
 .../isis/core/commons/lang/ListExtensions.java     | 15 +++++---
 .../isis/core/commons/lang/StringExtensions.java   |  4 +-
 .../core/metamodel/adapter/oid/OidMarshaller.java  |  4 +-
 .../isis/core/metamodel/facets/Annotations.java    | 15 ++++----
 .../core/metamodel/facets/CollectionUtils.java     |  3 +-
 .../facets/ContributeeMemberFacetFactory.java      |  2 -
 .../core/metamodel/facets/DomainEventHelper.java   |  9 ++---
 .../isis/core/metamodel/facets/FacetedMethod.java  |  5 +--
 ...nChoicesForCollectionParameterFacetFactory.java |  2 -
 .../method/ActionDefaultsFacetViaMethod.java       |  5 ++-
 .../ActionDefaultsFacetViaMethodFactory.java       |  2 +-
 .../annotation/HomePageFacetAnnotationFactory.java |  6 +--
 .../CssClassFacetForActionLayoutAnnotation.java    |  1 +
 .../DescribedAsFacetForActionLayoutAnnotation.java |  1 +
 .../NamedFacetForActionLayoutAnnotation.java       |  1 +
 ...dFacetDerivedFromDomainServiceFacetFactory.java |  1 +
 ...uFacetDerivedFromDomainServiceFacetFactory.java |  2 +-
 .../ActionParameterValidationFacetViaMethod.java   |  1 +
 .../ActionValidationFacetViaMethodFactory.java     |  1 +
 .../collections/CollectionFacetAbstract.java       |  2 +-
 .../modify/CollectionDomainEventFacetAbstract.java |  6 +--
 ...abledFacetOnCollectionDerivedFromImmutable.java |  2 +-
 ...CssClassFacetForCollectionLayoutAnnotation.java |  1 +
 ...cribedAsFacetForCollectionLayoutAnnotation.java |  1 +
 .../NamedFacetForCollectionLayoutAnnotation.java   |  1 +
 .../collections/modify/CollectionFacetUtils.java   |  1 +
 .../ParentedFacetSinceCollectionFactory.java       |  2 +-
 .../annotation/SortedByFacetAnnotationFactory.java |  1 -
 .../facets/fallback/FallbackFacetFactory.java      |  5 +--
 ...CssClassFaFacetOnMemberFromConfiguredRegex.java |  2 +-
 .../CssClassFaFacetOnMemberFromProperties.java     |  2 +-
 .../DisableForSessionFacetViaMethodFactory.java    |  1 +
 .../method/DisableForContextFacetViaMethod.java    |  4 +-
 .../HiddenFacetFromLayoutPropertiesAbstract.java   |  1 +
 .../HideForSessionFacetViaMethodFactory.java       |  2 +-
 .../HideForContextFacetViaMethodFactory.java       |  2 +-
 .../members/order/MemberOrderFacetAbstract.java    |  1 +
 .../callbacks/CreatedCallbackFacetFactory.java     |  2 +-
 .../object/callbacks/LoadCallbackFacetFactory.java |  2 +-
 .../callbacks/LoadedCallbackFacetAbstract.java     |  2 -
 .../callbacks/LoadingCallbackFacetAbstract.java    |  2 -
 .../callbacks/PersistCallbackFacetFactory.java     |  2 +-
 .../PersistCallbackViaSaveMethodFacetFactory.java  |  2 +-
 .../callbacks/PersistedCallbackFacetAbstract.java  |  2 -
 .../callbacks/PersistingCallbackFacetAbstract.java |  2 -
 .../callbacks/RemoveCallbackFacetFactory.java      |  2 +-
 .../RemoveCallbackViaDeleteMethodFacetFactory.java |  2 +-
 .../callbacks/RemovingCallbackFacetAbstract.java   |  2 -
 .../callbacks/UpdateCallbackFacetFactory.java      |  2 +-
 .../callbacks/UpdatedCallbackFacetAbstract.java    |  2 -
 .../callbacks/UpdatingCallbackFacetAbstract.java   |  2 -
 .../choices/enums/EnumValueSemanticsProvider.java  |  2 +-
 .../cssclass/method/CssClassFacetMethod.java       |  1 +
 .../method/CssClassFacetMethodFactory.java         |  1 +
 .../object/defaults/DefaultsProviderUtil.java      |  1 -
 .../annotcfg/DefaultedFacetAnnotation.java         |  2 +-
 .../annotcfg/DefaultedFacetFromConfiguration.java  |  2 +-
 ...AutoCompleteFacetForAutoCompleteAnnotation.java |  1 -
 ...ObjectSpecIdFacetForDomainObjectAnnotation.java |  1 +
 ...cIdFacetForJdoPersistenceCapableAnnotation.java |  2 +
 ...scribedAsFacetForViewModelLayoutAnnotation.java |  1 +
 .../NamedFacetForDomainObjectLayoutAnnotation.java |  1 +
 .../NamedFacetForViewModelLayoutAnnotation.java    |  2 -
 .../PluralFacetForViewModelLayoutAnnotation.java   |  1 +
 .../DomainServiceFacetAnnotationFactory.java       |  1 -
 ...NamedFacetForDomainServiceLayoutAnnotation.java |  1 +
 .../object/encodeable/EncoderDecoderUtil.java      |  1 -
 .../facets/object/facets/FacetsFacetAbstract.java  |  1 -
 .../hidden/method/HiddenObjectFacetViaMethod.java  |  2 +-
 .../method/HiddenObjectFacetViaMethodFactory.java  |  4 +-
 .../object/icon/method/IconFacetMethodFactory.java |  2 +-
 ...oveDatanucleusPersistableTypesFacetFactory.java |  5 +--
 .../ignore/javalang/RemoveMethodsFacetFactory.java |  6 +--
 .../jdo/RemoveJdoEnhancementTypesFacetFactory.java |  5 +--
 .../method/NavigableParentFacetMethodFactory.java  |  2 +-
 ...jectSpecIdFacetDerivedFromClassNameFactory.java |  1 -
 ...erivedFromDomainServiceAnnotationElseGetId.java |  2 -
 .../ObjectValidPropertiesFacet.java                |  1 -
 .../facets/object/parseable/ParserUtil.java        |  1 +
 ...tyDerivedFromRecreatableObjectFacetFactory.java |  1 +
 .../annotation/TitleAnnotationFacetFactory.java    |  3 +-
 .../title/methods/TitleFacetViaMethodsFactory.java |  4 +-
 ...cationFromMustSatisfyAnnotationOnTypeFacet.java |  2 +-
 .../method/ValidateObjectFacetMethodFactory.java   |  2 +-
 .../facets/object/value/EqualByContentFacet.java   |  1 -
 .../value/annotcfg/ValueFacetAnnotation.java       |  1 -
 ...ValueFacetAnnotationOrConfigurationFactory.java |  1 -
 .../annotcfg/ValueFacetFromConfiguration.java      |  2 -
 .../ValueFacetUsingSemanticsProviderFactory.java   |  1 -
 .../MustSatisfySpecificationFacetAbstract.java     |  5 +--
 ...ctionParameterChoicesFacetViaMethodFactory.java |  1 -
 .../ActionParameterDefaultsFacetAbstract.java      |  1 -
 ...arameterDefaultFacetDerivedFromTypeFactory.java |  2 +-
 .../CssClassFacetForParameterLayoutAnnotation.java |  1 +
 ...scribedAsFacetForParameterLayoutAnnotation.java |  1 +
 .../NamedFacetForParameterLayoutAnnotation.java    |  1 -
 .../PropertyAutoCompleteFacetAbstract.java         |  1 -
 .../defaults/PropertyDefaultFacetAbstract.java     |  1 -
 .../hidden/HiddenFacetForPropertyAnnotation.java   |  2 -
 .../modify/PropertyDomainEventFacetAbstract.java   |  6 +--
 .../regex/RegExFacetForPropertyAnnotation.java     |  2 +
 .../CssClassFacetForPropertyLayoutAnnotation.java  |  1 +
 ...escribedAsFacetForPropertyLayoutAnnotation.java |  1 +
 .../update/PropertySetAndClearFacetFactory.java    |  1 +
 .../core/metamodel/facets/value/JodaFunctions.java |  1 -
 .../BigDecimalValueSemanticsProvider.java          |  1 -
 .../BooleanWrapperValueSemanticsProvider.java      |  1 -
 .../value/datejdk8local/Jdk8LocalDateUtil.java     |  3 +-
 .../Jdk8LocalDateValueSemanticsProvider.java       |  8 ++--
 .../JodaLocalDateValueSemanticsProvider.java       |  4 +-
 .../datesql/JavaSqlDateValueSemanticsProvider.java |  1 -
 .../Jdk8LocalDateTimeValueSemanticsProvider.java   | 13 ++++---
 .../JodaDateTimeValueSemanticsProvider.java        |  9 ++---
 .../JodaLocalDateTimeValueSemanticsProvider.java   |  4 +-
 .../JavaUtilDateValueSemanticsProvider.java        |  1 -
 ...ageValueFacetUsingSemanticsProviderFactory.java |  1 +
 .../value/money/MoneyValueSemanticsProvider.java   |  2 +-
 .../PercentageValueSemanticsProvider.java          |  1 -
 ...imeValueFacetUsingSemanticsProviderFactory.java |  1 +
 .../timesql/JavaSqlTimeValueSemanticsProvider.java |  1 -
 ...ampValueFacetUsingSemanticsProviderFactory.java |  1 +
 ...URLValueFacetUsingSemanticsProviderFactory.java |  1 +
 .../interactions/ActionArgValidityContext.java     |  4 +-
 .../interactions/ActionUsabilityContext.java       |  4 +-
 .../interactions/ActionValidityContext.java        |  4 +-
 .../interactions/ActionVisibilityContext.java      |  4 +-
 .../interactions/CollectionAccessContext.java      |  4 +-
 .../interactions/CollectionRemoveFromContext.java  |  4 +-
 .../interactions/CollectionVisibilityContext.java  |  4 +-
 .../metamodel/interactions/ObjectTitleContext.java |  4 +-
 .../interactions/ObjectValidityContext.java        |  4 +-
 .../interactions/ObjectVisibilityContext.java      |  4 +-
 .../metamodel/interactions/ParseValueContext.java  |  4 +-
 .../interactions/PropertyAccessContext.java        |  4 +-
 .../interactions/PropertyModifyContext.java        |  4 +-
 .../interactions/PropertyUsabilityContext.java     |  4 +-
 .../interactions/PropertyVisibilityContext.java    |  4 +-
 .../isis/core/metamodel/layout/DeweyOrderSet.java  |  5 +--
 ...onParameterDefaultsAndChoicesPostProcessor.java |  4 +-
 .../core/metamodel/progmodel/DeprecatedMarker.java |  2 -
 .../progmodel/ProgrammingModelAbstract.java        |  9 ++---
 .../ApplicationFeatureRepositoryDefault.java       |  4 +-
 .../bookmarks/BookmarkServiceInternalDefault.java  |  4 +-
 .../config/ConfigurationServiceDefault.java        |  5 ++-
 .../services/grid/GridLoaderServiceDefault.java    | 11 +++---
 .../services/grid/GridServiceDefault.java          |  3 +-
 .../services/grid/GridSystemServiceAbstract.java   | 15 ++++----
 .../services/metamodel/DomainMemberDefault.java    |  8 ++--
 .../metamodel/MetaModelServiceDefault.java         |  5 +--
 .../services/swagger/internal/Generation.java      |  3 --
 .../metamodel/services/swagger/internal/Util.java  |  6 +--
 .../swagger/internal/ValuePropertyFactory.java     |  4 --
 .../core/metamodel/spec/feature/CurrentHolder.java |  1 -
 .../core/metamodel/spec/feature/ObjectAction.java  |  6 +--
 .../spec/feature/ObjectActionParameter.java        |  6 +--
 .../core/metamodel/spec/feature/ObjectMember.java  |  7 ++--
 .../spec/feature/OneToManyAssociation.java         |  4 --
 .../specloader/InjectorMethodEvaluatorDefault.java |  3 ++
 .../metamodel/specloader/ServiceInitializer.java   |  4 ++
 .../metamodel/specloader/SpecificationLoader.java  |  4 +-
 .../classsubstitutor/ClassSubstitutor.java         |  4 +-
 .../specloader/facetprocessor/FacetProcessor.java  | 15 ++++----
 .../specloader/specimpl/ContributeeMember.java     |  1 +
 .../specloader/specimpl/FacetedMethodsBuilder.java | 13 +++----
 .../specimpl/ObjectActionContributee.java          |  9 ++---
 .../specloader/specimpl/ObjectActionDefault.java   | 10 ++---
 .../specloader/specimpl/ObjectActionMixedIn.java   |  4 +-
 .../specimpl/ObjectActionParameterAbstract.java    |  8 ++--
 .../specimpl/ObjectSpecificationAbstract.java      | 21 +++++-----
 .../specimpl/dflt/ObjectSpecificationDefault.java  |  8 ++--
 .../validator/MetaModelValidatorComposite.java     |  5 +--
 .../MetaModelValidatorToCheckModuleExtent.java     |  9 +----
 ...taModelValidatorToCheckObjectSpecIdsUnique.java |  4 +-
 .../validator/MetaModelValidatorVisiting.java      |  5 +--
 .../specloader/validator/ValidationFailures.java   |  1 +
 .../AuthenticationRequestAbstract.java             |  4 +-
 .../standard/AuthenticationManagerStandard.java    |  4 +-
 .../JdoDiscriminatorAnnotationFacetFactory.java    |  1 +
 ...DerivedFromJdoColumnAnnotationFacetFactory.java |  6 +--
 .../util/JdoPrimaryKeyPropertyPredicate.java       |  3 +-
 .../dflt/ProgrammingModelFacetsJava5.java          |  8 ++--
 .../core/commons/lang/ListUtilsTest_adjust.java    |  8 ++--
 .../core/commons/lang/ListUtilsTest_insert.java    | 10 ++---
 .../metamodel/facets/AbstractFacetFactoryTest.java |  4 +-
 .../core/metamodel/facets/CollectionUtilsTest.java |  4 +-
 ...jectAssociationPredicatesTest_visibleWhere.java | 45 ++++++++++------------
 ...rvicesInjectorDefaultTest_validateServices.java |  4 +-
 .../ApplicationFeatureRepositoryDefaultTest.java   | 14 +++----
 .../core/metamodel/services/grid/BS3GridTest.java  | 10 ++---
 .../specloader/ServiceInitializerTest.java         | 15 +++++---
 .../SpecificationLoaderTestAbstract.java           |  4 +-
 ...ionParameterAbstractTest_getId_and_getName.java |  8 ++--
 203 files changed, 407 insertions(+), 425 deletions(-)

diff --git a/core/commons/src/main/java/org/apache/isis/commons/internal/collections/_Lists.java b/core/commons/src/main/java/org/apache/isis/commons/internal/collections/_Lists.java
index 5b163ae..ebb5df0 100644
--- a/core/commons/src/main/java/org/apache/isis/commons/internal/collections/_Lists.java
+++ b/core/commons/src/main/java/org/apache/isis/commons/internal/collections/_Lists.java
@@ -27,6 +27,7 @@ import java.util.Collection;
 import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
@@ -145,6 +146,25 @@ public final class _Lists {
                 ()->Collectors.<T, LinkedList<T>>toCollection(LinkedList::new) );
     }
 
+    // -- COPY ON WRITE LIST
+
+    public static <T> CopyOnWriteArrayList<T> newCopyOnWriteArrayList() {
+        return new CopyOnWriteArrayList<T>();
+    }
+
+    public static <T> CopyOnWriteArrayList<T> newCopyOnWriteArrayList(@Nullable Collection<T> collection) {
+        if(collection==null) {
+            return newCopyOnWriteArrayList();
+        }
+        return new CopyOnWriteArrayList<T>(collection);
+    }
+
+    public static <T> CopyOnWriteArrayList<T> newCopyOnWriteArrayList(@Nullable Iterable<T> iterable) {
+        return _Collections.collectFromIterable(iterable, _Lists::newCopyOnWriteArrayList,
+                ()->Collectors.<T, CopyOnWriteArrayList<T>>toCollection(CopyOnWriteArrayList::new) );
+    }
+
+    
     // -- TRANSFORMATION
 
     public static <T, R> List<R> transform(@Nullable List<T> input, Function<T, R> mapper) {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/authentication/AuthenticationSessionAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/authentication/AuthenticationSessionAbstract.java
index c50ab13..9073794 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/authentication/AuthenticationSessionAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/authentication/AuthenticationSessionAbstract.java
@@ -29,10 +29,10 @@ import java.util.List;
 import java.util.Map;
 
 import com.google.common.base.Objects;
-import com.google.common.collect.Lists;
 
 import org.apache.isis.applib.security.RoleMemento;
 import org.apache.isis.applib.security.UserMemento;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.encoding.DataInputExtended;
 import org.apache.isis.core.commons.encoding.DataOutputExtended;
 import org.apache.isis.core.commons.util.ToString;
@@ -148,7 +148,7 @@ public abstract class AuthenticationSessionAbstract implements AuthenticationSes
 
     @Override
     public UserMemento createUserMemento() {
-        final List<RoleMemento> roles = Lists.newArrayList();
+        final List<RoleMemento> roles = _Lists.newArrayList();
         for (final String roleName : getRoles()) {
             roles.add(new RoleMemento(roleName));
         }
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/authentication/MessageBroker.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/authentication/MessageBroker.java
index d9c416a..67e42c0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/authentication/MessageBroker.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/authentication/MessageBroker.java
@@ -24,7 +24,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 public class MessageBroker implements Serializable {
 
@@ -32,8 +32,8 @@ public class MessageBroker implements Serializable {
 
     // -- constructor, fields
 
-    private final List<String> messages = Lists.newArrayList();
-    private final List<String> warnings = Lists.newArrayList();
+    private final List<String> messages = _Lists.newArrayList();
+    private final List<String> warnings = _Lists.newArrayList();
     private String applicationError;
 
     public MessageBroker() {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/components/InstallerAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/components/InstallerAbstract.java
index 476aa77..c69e50c 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/components/InstallerAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/components/InstallerAbstract.java
@@ -19,11 +19,13 @@
 
 package org.apache.isis.core.commons.components;
 
+import static org.apache.isis.commons.internal.base._NullSafe.stream;
+
 import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;
 
-import com.google.common.collect.Lists;
-
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 
 public abstract class InstallerAbstract implements Installer {
@@ -85,15 +87,18 @@ public abstract class InstallerAbstract implements Installer {
      * Helper for subclasses implementing {@link #getTypes()}.
      */
     protected static List<Class<?>> listOf(final Class<?>... classes) {
-        return Collections.unmodifiableList(Lists.<Class<?>> newArrayList(classes));
+        return Collections.unmodifiableList(
+                stream(classes)
+                .collect(Collectors.toList())   );
     }
 
     /**
      * Helper for subclasses implementing {@link #getTypes()}.
      */
     protected static List<Class<?>> listOf(final List<Class<?>> classList, final Class<?>... classes) {
-        final List<Class<?>> arrayList = Lists.<Class<?>> newArrayList(classes);
-        arrayList.addAll(0, classList);
+        final List<Class<?>> arrayList = _Lists.<Class<?>> newArrayList(classList);
+        stream(classes)
+        .forEach(arrayList::add);
         return Collections.unmodifiableList(arrayList);
     }
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/config/IsisConfigurationDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/config/IsisConfigurationDefault.java
index 2771b36..20a1e48 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/config/IsisConfigurationDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/config/IsisConfigurationDefault.java
@@ -28,7 +28,6 @@ import java.util.Map;
 import java.util.Properties;
 import java.util.StringTokenizer;
 
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
 import org.slf4j.Logger;
@@ -36,6 +35,7 @@ import org.slf4j.LoggerFactory;
 
 import org.apache.isis.applib.annotation.Programmatic;
 import org.apache.isis.applib.services.config.ConfigurationProperty;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.exceptions.IsisException;
 import org.apache.isis.core.commons.resource.ResourceStreamSource;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
@@ -497,7 +497,7 @@ public class IsisConfigurationDefault implements ConfigurationServiceInternal {
     @Override
     public List<String> getPropertyNames() {
         initAppPropertiesIfRequired();
-        final List<String> list = Lists.newArrayList();
+        final List<String> list = _Lists.newArrayList();
         for (final Object key : applicationProperties.keySet()) {
             list.add((String) key);
         }
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/configbuilder/IsisConfigurationBuilder.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/configbuilder/IsisConfigurationBuilder.java
index a8790a0..b6b6c8a 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/configbuilder/IsisConfigurationBuilder.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/configbuilder/IsisConfigurationBuilder.java
@@ -25,11 +25,16 @@ import java.util.List;
 import java.util.Properties;
 import java.util.Set;
 
+import com.google.common.collect.Sets;
+
 import org.apache.commons.cli.CommandLine;
 import org.apache.commons.cli.CommandLineParser;
 import org.apache.commons.cli.DefaultParser;
 import org.apache.commons.cli.Options;
 import org.apache.commons.cli.ParseException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import org.apache.isis.applib.util.ToString;
 import org.apache.isis.core.commons.config.ConfigurationConstants;
 import org.apache.isis.core.commons.config.IsisConfiguration;
@@ -42,10 +47,6 @@ import org.apache.isis.core.commons.resource.ResourceStreamSourceChainOfResponsi
 import org.apache.isis.core.commons.resource.ResourceStreamSourceFileSystem;
 import org.apache.isis.core.runtime.optionhandler.BootPrinter;
 import org.apache.isis.core.runtime.optionhandler.OptionHandler;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.google.common.collect.Sets;
 
 /**
  * Holds a mutable set of properties representing the configuration.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/configbuilder/PrimerForEnvironmentVariableISIS_OPTS.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/configbuilder/PrimerForEnvironmentVariableISIS_OPTS.java
index c8b6a00..4d57ace 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/configbuilder/PrimerForEnvironmentVariableISIS_OPTS.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/configbuilder/PrimerForEnvironmentVariableISIS_OPTS.java
@@ -24,9 +24,10 @@ import java.util.Map;
 
 import com.google.common.base.Joiner;
 import com.google.common.base.Splitter;
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
+import org.apache.isis.commons.internal.collections._Lists;
+
 public class PrimerForEnvironmentVariableISIS_OPTS implements IsisConfigurationBuilder.Primer {
 
     public static final String OPT_ENV = "ISIS_OPTS";
@@ -65,7 +66,7 @@ public class PrimerForEnvironmentVariableISIS_OPTS implements IsisConfigurationB
         if (env != null) {
             final List<String> keyAndValues = Splitter.on(separator).splitToList(env);
             for (String keyAndValue : keyAndValues) {
-                final List<String> parts = Lists.newArrayList(Splitter.on("=").splitToList(keyAndValue));
+                final List<String> parts = _Lists.newArrayList(Splitter.on("=").splitToList(keyAndValue));
 
                 if (parts.size() >= 2) {
                     String key = parts.get(0);
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/encoding/FieldType.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/encoding/FieldType.java
index 13c7a7b..974e95c 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/encoding/FieldType.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/encoding/FieldType.java
@@ -31,10 +31,11 @@ import java.lang.reflect.InvocationTargetException;
 import java.util.HashMap;
 import java.util.Map;
 
-import org.apache.isis.commons.internal.context._Context;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import org.apache.isis.commons.internal.context._Context;
+
 /**
  * Typesafe writing and reading of fields, providing some level of integrity
  * checking of encoded messages.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ArrayExtensions.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ArrayExtensions.java
index 37d50f6..f350e1d 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ArrayExtensions.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ArrayExtensions.java
@@ -26,10 +26,9 @@ import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.exceptions.IsisException;
 
-import com.google.common.collect.Lists;
-
 public final class ArrayExtensions {
 
     private ArrayExtensions() {
@@ -73,7 +72,7 @@ public final class ArrayExtensions {
 
     @SafeVarargs
     public static <T> T[] combine(final T[]... arrays) {
-        final List<T> combinedList = Lists.newArrayList();
+        final List<T> combinedList = _Lists.newArrayList();
         for (final T[] array : arrays) {
             Collections.addAll(combinedList, array);
         }
@@ -81,13 +80,13 @@ public final class ArrayExtensions {
     }
 
     public static <T> T[] appendT(final T[] array, final T obj) {
-        final List<T> combinedList = Lists.newArrayList();
+        final List<T> combinedList = _Lists.newArrayList();
         combinedList.add(obj);
         Collections.addAll(combinedList, array);
         return combinedList.toArray(array); // using array to specify the type
     }
     public static String[] append(final String[] extendee, final String... moreArgs) {
-        final List<String> argList = Lists.newArrayList();
+        final List<String> argList = _Lists.newArrayList();
         argList.addAll(Arrays.asList(extendee));
         argList.addAll(Arrays.asList(moreArgs));
         return argList.toArray(new String[] {});
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ClassFunctions.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ClassFunctions.java
index eedf06d..be55caa 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ClassFunctions.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ClassFunctions.java
@@ -18,10 +18,10 @@
  */
 package org.apache.isis.core.commons.lang;
 
-import javax.annotation.Nullable;
-
 import java.util.function.Function;
 
+import javax.annotation.Nullable;
+
 public final class ClassFunctions {
 
     private ClassFunctions(){}
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ClassUtil.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ClassUtil.java
index da6e8c5..d979cc0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ClassUtil.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ClassUtil.java
@@ -24,10 +24,10 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import org.apache.isis.commons.internal.context._Context;
-
 import com.google.common.collect.Maps;
 
+import org.apache.isis.commons.internal.context._Context;
+
 public final class ClassUtil {
 
     static final String JAVA_CLASS_PREFIX = "java.";
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ListExtensions.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ListExtensions.java
index 1957741..c1fa591 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ListExtensions.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/ListExtensions.java
@@ -19,13 +19,16 @@
 
 package org.apache.isis.core.commons.lang;
 
+import static org.apache.isis.commons.internal.base._NullSafe.stream;
+
 import java.util.Arrays;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import com.google.common.collect.Collections2;
-import com.google.common.collect.Lists;
+
+import org.apache.isis.commons.internal.collections._Lists;
 
 public final class ListExtensions {
     private static final String DEFAULT_DELIMITER = ",";
@@ -34,7 +37,7 @@ public final class ListExtensions {
     }
 
     public static <T> List<T> combineWith(final List<T> extendee, final List<T> list2) {
-        final List<T> combinedList = Lists.newArrayList();
+        final List<T> combinedList = _Lists.newArrayList();
         combinedList.addAll(extendee);
         combinedList.addAll(list2);
         return combinedList;
@@ -73,11 +76,13 @@ public final class ListExtensions {
     // //////////////////////////////////////
 
     public static <T> List<T> mutableCopy(final List<T> input) {
-        return Lists.newArrayList(input != null? input: Collections.<T>emptyList());
+        return stream(input)
+                .collect(Collectors.toList());
     }
 
     public static <T> List<T> mutableCopy(T[] arr) {
-        return mutableCopy(arr != null? Arrays.asList(arr): Collections.<T>emptyList()) ;
+        return stream(arr)
+                .collect(Collectors.toList());
     }
 
     public static <T> void insert(final List<T> list, final int insertionPoint, final T elementToInsert) {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/StringExtensions.java b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/StringExtensions.java
index 5150c9e..a6354f2 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/StringExtensions.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/commons/lang/StringExtensions.java
@@ -24,11 +24,11 @@ import java.util.Collections;
 import java.util.List;
 import java.util.StringTokenizer;
 
+import com.google.common.base.Strings;
+
 import org.apache.isis.applib.util.Enums;
 import org.apache.isis.commons.internal.base._Strings;
 
-import com.google.common.base.Strings;
-
 public final class StringExtensions {
 
     private StringExtensions() {}
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/adapter/oid/OidMarshaller.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/adapter/oid/OidMarshaller.java
index c57cf70..161a7d2 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/adapter/oid/OidMarshaller.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/adapter/oid/OidMarshaller.java
@@ -25,10 +25,10 @@ import java.util.regex.Pattern;
 
 import com.google.common.base.Splitter;
 import com.google.common.base.Strings;
-import com.google.common.collect.Lists;
 
 import org.apache.isis.applib.annotation.Programmatic;
 import org.apache.isis.applib.services.bookmark.Bookmark;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.adapter.oid.Oid.State;
 import org.apache.isis.core.metamodel.adapter.version.Version;
 import org.apache.isis.core.metamodel.spec.ObjectSpecId;
@@ -167,7 +167,7 @@ public final class OidMarshaller {
         final String rootIdentifier = getGroup(matcher, 5);
 
         final String aggregateOidPart = getGroup(matcher, 6);
-        final List<AggregateOidPart> aggregateOidParts = Lists.newArrayList();
+        final List<AggregateOidPart> aggregateOidParts = _Lists.newArrayList();
         final Splitter nestingSplitter = Splitter.on(SEPARATOR_NESTING);
         final Splitter partsSplitter = Splitter.on(SEPARATOR);
         if(aggregateOidPart != null) {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/Annotations.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/Annotations.java
index 1e87972..a67640a 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/Annotations.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/Annotations.java
@@ -36,14 +36,13 @@ import javax.validation.constraints.Pattern;
 import javax.xml.bind.annotation.XmlTransient;
 import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
 
-import com.google.common.collect.Lists;
-
 import org.apache.isis.applib.annotation.Collection;
 import org.apache.isis.applib.annotation.CollectionLayout;
 import org.apache.isis.applib.annotation.MemberOrder;
 import org.apache.isis.applib.annotation.Property;
 import org.apache.isis.applib.annotation.PropertyLayout;
 import org.apache.isis.applib.annotation.Title;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.lang.ThrowableExtensions;
 import org.apache.isis.core.commons.reflection.Reflect;
 import org.apache.isis.core.metamodel.exceptions.MetaModelException;
@@ -156,7 +155,7 @@ public final class Annotations  {
             return Collections.emptyList();
         }
 
-        final List<AnnotationAndDepth<T>> annotationAndDepths = Lists.newArrayList();
+        final List<AnnotationAndDepth<T>> annotationAndDepths = _Lists.newArrayList();
         for (final Annotation annotation : cls.getAnnotations()) {
             append(annotation, annotationClass, annotationAndDepths);
         }
@@ -192,7 +191,7 @@ public final class Annotations  {
             final Annotation annotation,
             final Class<T> annotationClass,
             final List<AnnotationAndDepth<T>> annotationAndDepths) {
-        appendWithDepth(annotation, annotationClass, annotationAndDepths, 0, Lists.newArrayList());
+        appendWithDepth(annotation, annotationClass, annotationAndDepths, 0, _Lists.newArrayList());
     }
 
     private static <T extends Annotation> void appendWithDepth(
@@ -299,7 +298,7 @@ public final class Annotations  {
             return Collections.emptyList();
         }
 
-        final List<AnnotationAndDepth<T>> annotationAndDepths = Lists.newArrayList();
+        final List<AnnotationAndDepth<T>> annotationAndDepths = _Lists.newArrayList();
         for (final Annotation annotation : method.getAnnotations()) {
             append(annotation, annotationClass, annotationAndDepths);
         }
@@ -368,7 +367,7 @@ public final class Annotations  {
     public static <T extends Annotation> List<Evaluator<T>> getEvaluators(
             final Class<?> cls,
             final Class<T> annotationClass) {
-        final List<Evaluator<T>> evaluators = Lists.newArrayList();
+        final List<Evaluator<T>> evaluators = _Lists.newArrayList();
         visitEvaluators(cls, annotationClass, evaluators::add);
 
         // search implemented interfaces
@@ -399,7 +398,7 @@ public final class Annotations  {
             final Class<T> annotationClass,
             final Predicate<Evaluator<T>> filter) {
 
-        final List<Evaluator<T>> evaluators = Lists.newArrayList();
+        final List<Evaluator<T>> evaluators = _Lists.newArrayList();
         visitEvaluatorsWhile(cls, annotationClass, __->evaluators.isEmpty(), evaluator->{
             if(filter.test(evaluator)) {
                 evaluators.add(evaluator);
@@ -679,7 +678,7 @@ public final class Annotations  {
             return Collections.emptyList();
         }
 
-        final List<AnnotationAndDepth<T>> annotationAndDepths = Lists.newArrayList();
+        final List<AnnotationAndDepth<T>> annotationAndDepths = _Lists.newArrayList();
         final Annotation[] parameterAnnotations = method.getParameterAnnotations()[paramNum];
         for (Annotation annotation : parameterAnnotations) {
             append(annotation, annotationClass, annotationAndDepths);
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/CollectionUtils.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/CollectionUtils.java
index fceda63..2c71a76 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/CollectionUtils.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/CollectionUtils.java
@@ -35,7 +35,6 @@ import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.CopyOnWriteArraySet;
 import java.util.function.Function;
 
-import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
 
 import org.apache.isis.commons.internal.base._Casts;
@@ -67,7 +66,7 @@ public final class CollectionUtils {
     private final static Map<Class<?>, Function<Iterable<Object>, Object>> factoriesByType = _With.hashMap(
             map-> {
                 // specific list implementations
-                map.put(CopyOnWriteArrayList.class, Lists::newCopyOnWriteArrayList);
+                map.put(CopyOnWriteArrayList.class, _Lists::newCopyOnWriteArrayList);
                 map.put(LinkedList.class, _Lists::newLinkedList);
                 map.put(ArrayList.class, _Lists::newArrayList);
                 map.put(AbstractList.class, _Lists::newArrayList);
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/ContributeeMemberFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/ContributeeMemberFacetFactory.java
index b869913..0f426ea 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/ContributeeMemberFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/ContributeeMemberFacetFactory.java
@@ -19,8 +19,6 @@
 
 package org.apache.isis.core.metamodel.facets;
 
-import java.util.Properties;
-
 import org.apache.isis.core.metamodel.spec.feature.ObjectMember;
 import org.apache.isis.core.metamodel.specloader.specimpl.ContributeeMember;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/DomainEventHelper.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/DomainEventHelper.java
index 4581989..05c5611 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/DomainEventHelper.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/DomainEventHelper.java
@@ -26,9 +26,6 @@ import java.util.Collections;
 import java.util.List;
 import java.util.stream.Collectors;
 
-import com.google.common.collect.Iterables;
-import com.google.common.collect.Lists;
-
 import org.apache.isis.applib.FatalException;
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.events.domain.AbstractDomainEvent;
@@ -128,9 +125,9 @@ public class DomainEventHelper {
         }
     }
 
-    private static <T> List<T> immutableList(final Iterable<T> iterable) {
-        return Collections.unmodifiableList(Lists.newArrayList(iterable));
-    }
+//    private static <T> List<T> immutableList(final Iterable<T> iterable) {
+//        return Collections.unmodifiableList(_Lists.newArrayList(iterable));
+//    }
 
     @SuppressWarnings("unchecked")
     static <S> ActionDomainEvent<S> newActionDomainEvent(
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/FacetedMethod.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/FacetedMethod.java
index 3545be7..512218f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/FacetedMethod.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/FacetedMethod.java
@@ -26,6 +26,7 @@ import java.util.List;
 
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.commons.internal.collections._Arrays;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.lang.StringExtensions;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
@@ -35,8 +36,6 @@ import org.apache.isis.core.metamodel.facets.collparam.semantics.CollectionSeman
 import org.apache.isis.core.metamodel.facets.collparam.semantics.CollectionSemanticsFacetDefault;
 import org.apache.isis.core.metamodel.specloader.SpecificationLoader;
 
-import com.google.common.collect.Lists;
-
 /**
  * non-final only so it can be mocked if need be.
  */
@@ -110,7 +109,7 @@ public class FacetedMethod extends TypedHolderDefault implements IdentifiedHolde
 
         final Class<?>[] parameterTypes = actionMethod.getParameterTypes();
         final Type[] genericParameterTypes = actionMethod.getGenericParameterTypes();
-        final List<FacetedMethodParameter> actionParams = Lists.newArrayList();
+        final List<FacetedMethodParameter> actionParams = _Lists.newArrayList();
 
         for (int paramNum = 0; paramNum < parameterTypes.length; paramNum++) {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/action/ActionChoicesForCollectionParameterFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/action/ActionChoicesForCollectionParameterFacetFactory.java
index 9ac782e..886e3a0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/action/ActionChoicesForCollectionParameterFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/action/ActionChoicesForCollectionParameterFacetFactory.java
@@ -19,8 +19,6 @@
 
 package org.apache.isis.core.metamodel.facets.actions.action;
 
-import java.util.List;
-
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facetapi.MetaModelValidatorRefiner;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/defaults/method/ActionDefaultsFacetViaMethod.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/defaults/method/ActionDefaultsFacetViaMethod.java
index 14a4941..69b65a4 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/defaults/method/ActionDefaultsFacetViaMethod.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/defaults/method/ActionDefaultsFacetViaMethod.java
@@ -22,13 +22,14 @@ package org.apache.isis.core.metamodel.facets.actions.defaults.method;
 import java.lang.reflect.Method;
 import java.util.Collections;
 import java.util.List;
+
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.ImperativeFacet;
-import org.apache.isis.core.metamodel.facets.actions.defaults.ActionDefaultsFacetAbstract;
-import org.apache.isis.core.metamodel.facets.actions.action.invocation.ActionInvocationFacetForDomainEventAbstract;
 import org.apache.isis.core.metamodel.facets.actions.action.invocation.ActionInvocationFacet;
+import org.apache.isis.core.metamodel.facets.actions.action.invocation.ActionInvocationFacetForDomainEventAbstract;
+import org.apache.isis.core.metamodel.facets.actions.defaults.ActionDefaultsFacetAbstract;
 
 public class ActionDefaultsFacetViaMethod extends ActionDefaultsFacetAbstract implements ImperativeFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/defaults/method/ActionDefaultsFacetViaMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/defaults/method/ActionDefaultsFacetViaMethodFactory.java
index e536dcc..556f8e5 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/defaults/method/ActionDefaultsFacetViaMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/defaults/method/ActionDefaultsFacetViaMethodFactory.java
@@ -28,10 +28,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 /**
  * Sets up all the {@link Facet}s for an action in a single shot.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/homepage/annotation/HomePageFacetAnnotationFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/homepage/annotation/HomePageFacetAnnotationFactory.java
index 63c5abd..d35fdfd 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/homepage/annotation/HomePageFacetAnnotationFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/homepage/annotation/HomePageFacetAnnotationFactory.java
@@ -23,9 +23,9 @@ import java.util.List;
 import java.util.stream.Stream;
 
 import com.google.common.base.Joiner;
-import com.google.common.collect.Lists;
 
 import org.apache.isis.applib.annotation.HomePage;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
@@ -69,7 +69,7 @@ public class HomePageFacetAnnotationFactory extends FacetFactoryAbstract impleme
     private Visitor newValidatorVisitor() {
         return new MetaModelValidatorVisiting.SummarizingVisitor() {
 
-            private final List<String> annotated = Lists.newArrayList();
+            private final List<String> annotated = _Lists.newArrayList();
 
             @Override
             public boolean visit(ObjectSpecification objectSpec, ValidationFailures validationFailures) {
@@ -94,7 +94,7 @@ public class HomePageFacetAnnotationFactory extends FacetFactoryAbstract impleme
             public void summarize(ValidationFailures validationFailures) {
                 if(annotated.size()>1) {
                     for (String actionId : annotated) {
-                        final List<String> others = Lists.newArrayList(annotated);
+                        final List<String> others = _Lists.newArrayList(annotated);
                         others.remove(actionId);
                         final String nonServiceNamesStr = Joiner.on(", ").join(others);
                         validationFailures.add(
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/CssClassFacetForActionLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/CssClassFacetForActionLayoutAnnotation.java
index dbaf691..becba24 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/CssClassFacetForActionLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/CssClassFacetForActionLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.ActionLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.members.cssclass.CssClassFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/DescribedAsFacetForActionLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/DescribedAsFacetForActionLayoutAnnotation.java
index 2146920..d45f371 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/DescribedAsFacetForActionLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/DescribedAsFacetForActionLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.ActionLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.describedas.DescribedAsFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/NamedFacetForActionLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/NamedFacetForActionLayoutAnnotation.java
index 7f74cab..4394a9d 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/NamedFacetForActionLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/layout/NamedFacetForActionLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.ActionLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.named.NamedFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/notcontributed/derived/NotContributedFacetDerivedFromDomainServiceFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/notcontributed/derived/NotContributedFacetDerivedFromDomainServiceFacetFactory.java
index bbdfd1a..37f4f69 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/notcontributed/derived/NotContributedFacetDerivedFromDomainServiceFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/notcontributed/derived/NotContributedFacetDerivedFromDomainServiceFacetFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.actions.notcontributed.derived;
 
 import java.lang.reflect.Method;
+
 import org.apache.isis.applib.annotation.NatureOfService;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/notinservicemenu/derived/NotInServiceMenuFacetDerivedFromDomainServiceFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/notinservicemenu/derived/NotInServiceMenuFacetDerivedFromDomainServiceFacetFactory.java
index 2f0c484..23bf4de 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/notinservicemenu/derived/NotInServiceMenuFacetDerivedFromDomainServiceFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/notinservicemenu/derived/NotInServiceMenuFacetDerivedFromDomainServiceFacetFactory.java
@@ -20,13 +20,13 @@
 package org.apache.isis.core.metamodel.facets.actions.notinservicemenu.derived;
 
 import java.lang.reflect.Method;
+
 import org.apache.isis.applib.annotation.NatureOfService;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.FacetedMethod;
 import org.apache.isis.core.metamodel.facets.object.domainservice.DomainServiceFacet;
-import org.apache.isis.core.metamodel.progmodel.DeprecatedMarker;
 import org.apache.isis.core.metamodel.spec.ObjectSpecification;
 
 public class NotInServiceMenuFacetDerivedFromDomainServiceFacetFactory extends FacetFactoryAbstract {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/validate/method/ActionParameterValidationFacetViaMethod.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/validate/method/ActionParameterValidationFacetViaMethod.java
index d1e863f..9d08187 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/validate/method/ActionParameterValidationFacetViaMethod.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/validate/method/ActionParameterValidationFacetViaMethod.java
@@ -22,6 +22,7 @@ package org.apache.isis.core.metamodel.facets.actions.validate.method;
 import java.lang.reflect.Method;
 import java.util.Collections;
 import java.util.List;
+
 import org.apache.isis.applib.services.i18n.TranslatableString;
 import org.apache.isis.applib.services.i18n.TranslationService;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/validate/method/ActionValidationFacetViaMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/validate/method/ActionValidationFacetViaMethodFactory.java
index 4bd931c..aa06398 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/validate/method/ActionValidationFacetViaMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/actions/validate/method/ActionValidationFacetViaMethodFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.actions.validate.method;
 
 import java.lang.reflect.Method;
+
 import org.apache.isis.applib.services.i18n.TranslatableString;
 import org.apache.isis.applib.services.i18n.TranslationService;
 import org.apache.isis.core.commons.lang.StringExtensions;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/CollectionFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/CollectionFacetAbstract.java
index ca41931..06cb9ce 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/CollectionFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/CollectionFacetAbstract.java
@@ -25,8 +25,8 @@ import java.util.Iterator;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.FacetAbstract;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacet;
 import org.apache.isis.core.metamodel.facets.actcoll.typeof.TypeOfFacet;
+import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacet;
 
 public abstract class CollectionFacetAbstract extends FacetAbstract implements CollectionFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/collection/modify/CollectionDomainEventFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/collection/modify/CollectionDomainEventFacetAbstract.java
index ac9ddc5..28a7ca3 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/collection/modify/CollectionDomainEventFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/collection/modify/CollectionDomainEventFacetAbstract.java
@@ -19,13 +19,13 @@
 
 package org.apache.isis.core.metamodel.facets.collections.collection.modify;
 
-import org.apache.isis.applib.services.wrapper.events.UsabilityEvent;
-import org.apache.isis.applib.services.wrapper.events.ValidityEvent;
-import org.apache.isis.applib.services.wrapper.events.VisibilityEvent;
 import org.apache.isis.applib.events.domain.AbstractDomainEvent;
 import org.apache.isis.applib.events.domain.CollectionDomainEvent;
 import org.apache.isis.applib.services.i18n.TranslatableString;
 import org.apache.isis.applib.services.i18n.TranslationService;
+import org.apache.isis.applib.services.wrapper.events.UsabilityEvent;
+import org.apache.isis.applib.services.wrapper.events.ValidityEvent;
+import org.apache.isis.applib.services.wrapper.events.VisibilityEvent;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.IdentifiedHolder;
 import org.apache.isis.core.metamodel.facets.DomainEventHelper;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/disabled/fromimmutable/DisabledFacetOnCollectionDerivedFromImmutable.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/disabled/fromimmutable/DisabledFacetOnCollectionDerivedFromImmutable.java
index db0a7b2..d94e5f9 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/disabled/fromimmutable/DisabledFacetOnCollectionDerivedFromImmutable.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/disabled/fromimmutable/DisabledFacetOnCollectionDerivedFromImmutable.java
@@ -22,8 +22,8 @@ package org.apache.isis.core.metamodel.facets.collections.disabled.fromimmutable
 import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.object.immutable.ImmutableFacet;
 import org.apache.isis.core.metamodel.facets.members.disabled.DisabledFacetAbstract;
+import org.apache.isis.core.metamodel.facets.object.immutable.ImmutableFacet;
 
 public class DisabledFacetOnCollectionDerivedFromImmutable extends DisabledFacetAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/CssClassFacetForCollectionLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/CssClassFacetForCollectionLayoutAnnotation.java
index 3aeac3d..f6a4079 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/CssClassFacetForCollectionLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/CssClassFacetForCollectionLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.CollectionLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.members.cssclass.CssClassFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/DescribedAsFacetForCollectionLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/DescribedAsFacetForCollectionLayoutAnnotation.java
index f492803..73e0359 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/DescribedAsFacetForCollectionLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/DescribedAsFacetForCollectionLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.CollectionLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.describedas.DescribedAsFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/NamedFacetForCollectionLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/NamedFacetForCollectionLayoutAnnotation.java
index 1ca57e4..a393e4d 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/NamedFacetForCollectionLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/layout/NamedFacetForCollectionLayoutAnnotation.java
@@ -22,6 +22,7 @@ package org.apache.isis.core.metamodel.facets.collections.layout;
 import java.util.List;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.CollectionLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.named.NamedFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/modify/CollectionFacetUtils.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/modify/CollectionFacetUtils.java
index fed2206..fca5be2 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/modify/CollectionFacetUtils.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/modify/CollectionFacetUtils.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.collections.modify;
 
 import java.util.List;
+
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 
 @Deprecated
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/parented/ParentedFacetSinceCollectionFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/parented/ParentedFacetSinceCollectionFactory.java
index 0e96d96..ba1d283 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/parented/ParentedFacetSinceCollectionFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/parented/ParentedFacetSinceCollectionFactory.java
@@ -22,11 +22,11 @@ package org.apache.isis.core.metamodel.facets.collections.parented;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
+import org.apache.isis.core.metamodel.facets.collections.javautilcollection.CollectionFacetFactory;
 import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacet;
 import org.apache.isis.core.metamodel.facets.object.parented.ParentedCollectionFacet;
 import org.apache.isis.core.metamodel.progmodel.ProgrammingModel;
 import org.apache.isis.core.metamodel.specloader.CollectionUtils;
-import org.apache.isis.core.metamodel.facets.collections.javautilcollection.CollectionFacetFactory;
 
 /**
  * All {@link CollectionUtils collection types} are intrinsically
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/sortedby/annotation/SortedByFacetAnnotationFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/sortedby/annotation/SortedByFacetAnnotationFactory.java
index 5132a0a..cf54ba0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/sortedby/annotation/SortedByFacetAnnotationFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/collections/sortedby/annotation/SortedByFacetAnnotationFactory.java
@@ -20,7 +20,6 @@
 package org.apache.isis.core.metamodel.facets.collections.sortedby.annotation;
 
 import java.util.Comparator;
-import java.util.List;
 import java.util.stream.Stream;
 
 import org.apache.isis.core.commons.config.IsisConfiguration;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/fallback/FallbackFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/fallback/FallbackFacetFactory.java
index f48d9616..5e2ea10 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/fallback/FallbackFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/fallback/FallbackFacetFactory.java
@@ -23,9 +23,8 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 
-import com.google.common.collect.Lists;
-
 import org.apache.isis.applib.annotation.LabelPosition;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.lang.StringExtensions;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
@@ -90,7 +89,7 @@ public class FallbackFacetFactory extends FacetFactoryAbstract {
 
     @Override
     public void process(final ProcessMethodContext processMethodContext) {
-        final List<Facet> facets = Lists.newArrayList();
+        final List<Facet> facets = _Lists.newArrayList();
 
         final FacetedMethod facetedMethod = processMethodContext.getFacetHolder();
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/cssclassfa/annotprop/CssClassFaFacetOnMemberFromConfiguredRegex.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/cssclassfa/annotprop/CssClassFaFacetOnMemberFromConfiguredRegex.java
index 74a3387..ee35a32 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/cssclassfa/annotprop/CssClassFaFacetOnMemberFromConfiguredRegex.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/cssclassfa/annotprop/CssClassFaFacetOnMemberFromConfiguredRegex.java
@@ -19,9 +19,9 @@
 
 package org.apache.isis.core.metamodel.facets.members.cssclassfa.annotprop;
 
-import org.apache.isis.core.metamodel.facets.members.cssclassfa.CssClassFaPosition;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.members.cssclassfa.CssClassFaFacetAbstract;
+import org.apache.isis.core.metamodel.facets.members.cssclassfa.CssClassFaPosition;
 
 public class CssClassFaFacetOnMemberFromConfiguredRegex extends CssClassFaFacetAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/cssclassfa/annotprop/CssClassFaFacetOnMemberFromProperties.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/cssclassfa/annotprop/CssClassFaFacetOnMemberFromProperties.java
index d11d07f..570153f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/cssclassfa/annotprop/CssClassFaFacetOnMemberFromProperties.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/cssclassfa/annotprop/CssClassFaFacetOnMemberFromProperties.java
@@ -19,9 +19,9 @@ package org.apache.isis.core.metamodel.facets.members.cssclassfa.annotprop;
 
 import java.util.Properties;
 
-import org.apache.isis.core.metamodel.facets.members.cssclassfa.CssClassFaPosition;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.members.cssclassfa.CssClassFaFacetAbstract;
+import org.apache.isis.core.metamodel.facets.members.cssclassfa.CssClassFaPosition;
 
 public class CssClassFaFacetOnMemberFromProperties extends CssClassFaFacetAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/disabled/forsession/DisableForSessionFacetViaMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/disabled/forsession/DisableForSessionFacetViaMethodFactory.java
index bad66b4..bbc57ec 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/disabled/forsession/DisableForSessionFacetViaMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/disabled/forsession/DisableForSessionFacetViaMethodFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.members.disabled.forsession;
 
 import java.lang.reflect.Method;
+
 import org.apache.isis.applib.security.UserMemento;
 import org.apache.isis.core.commons.authentication.AuthenticationSessionProvider;
 import org.apache.isis.core.commons.lang.StringExtensions;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/disabled/method/DisableForContextFacetViaMethod.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/disabled/method/DisableForContextFacetViaMethod.java
index 2971217..24db424 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/disabled/method/DisableForContextFacetViaMethod.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/disabled/method/DisableForContextFacetViaMethod.java
@@ -23,10 +23,10 @@ import java.lang.reflect.Method;
 import java.util.Collections;
 import java.util.List;
 
-import org.apache.isis.applib.services.wrapper.events.UsabilityEvent;
-import org.apache.isis.commons.internal.base._NullSafe;
 import org.apache.isis.applib.services.i18n.TranslatableString;
 import org.apache.isis.applib.services.i18n.TranslationService;
+import org.apache.isis.applib.services.wrapper.events.UsabilityEvent;
+import org.apache.isis.commons.internal.base._NullSafe;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.ImperativeFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/HiddenFacetFromLayoutPropertiesAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/HiddenFacetFromLayoutPropertiesAbstract.java
index 5611dd2..da84e83 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/HiddenFacetFromLayoutPropertiesAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/HiddenFacetFromLayoutPropertiesAbstract.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.members.hidden;
 
 import java.util.Properties;
+
 import com.google.common.base.Strings;
 
 import org.apache.isis.applib.annotation.Where;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/forsession/HideForSessionFacetViaMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/forsession/HideForSessionFacetViaMethodFactory.java
index fad2395..877c1e3 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/forsession/HideForSessionFacetViaMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/forsession/HideForSessionFacetViaMethodFactory.java
@@ -28,10 +28,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class HideForSessionFacetViaMethodFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/method/HideForContextFacetViaMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/method/HideForContextFacetViaMethodFactory.java
index 2780eab..b220c2c 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/method/HideForContextFacetViaMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/hidden/method/HideForContextFacetViaMethodFactory.java
@@ -26,10 +26,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class HideForContextFacetViaMethodFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/order/MemberOrderFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/order/MemberOrderFacetAbstract.java
index b06bc6c..01cebfc 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/order/MemberOrderFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/members/order/MemberOrderFacetAbstract.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.members.order;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.services.i18n.TranslationService;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/CreatedCallbackFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/CreatedCallbackFacetFactory.java
index 3c4ed37..46d2c33 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/CreatedCallbackFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/CreatedCallbackFacetFactory.java
@@ -27,10 +27,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class CreatedCallbackFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadCallbackFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadCallbackFacetFactory.java
index 44696e6..1057353 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadCallbackFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadCallbackFacetFactory.java
@@ -27,10 +27,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class LoadCallbackFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadedCallbackFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadedCallbackFacetAbstract.java
index 9389015..9f5f1c2 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadedCallbackFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadedCallbackFacetAbstract.java
@@ -21,8 +21,6 @@ package org.apache.isis.core.metamodel.facets.object.callbacks;
 
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.object.callbacks.LoadedCallbackFacet;
-import org.apache.isis.core.metamodel.facets.object.callbacks.CallbackFacetAbstract;
 
 public abstract class LoadedCallbackFacetAbstract extends CallbackFacetAbstract implements LoadedCallbackFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadingCallbackFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadingCallbackFacetAbstract.java
index 08a5d49..091e3d0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadingCallbackFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/LoadingCallbackFacetAbstract.java
@@ -21,8 +21,6 @@ package org.apache.isis.core.metamodel.facets.object.callbacks;
 
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.object.callbacks.LoadingCallbackFacet;
-import org.apache.isis.core.metamodel.facets.object.callbacks.CallbackFacetAbstract;
 
 /**
  * @deprecated - THIS CAN NEVER BE CALLED (BY JDO OBJECTSTORE AT LEAST)
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistCallbackFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistCallbackFacetFactory.java
index a6b641a..5ee3d2a 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistCallbackFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistCallbackFacetFactory.java
@@ -27,10 +27,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class PersistCallbackFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistCallbackViaSaveMethodFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistCallbackViaSaveMethodFacetFactory.java
index e1c6c19..be140ad 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistCallbackViaSaveMethodFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistCallbackViaSaveMethodFacetFactory.java
@@ -27,10 +27,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class PersistCallbackViaSaveMethodFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistedCallbackFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistedCallbackFacetAbstract.java
index 6a8f651..9407641 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistedCallbackFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistedCallbackFacetAbstract.java
@@ -21,8 +21,6 @@ package org.apache.isis.core.metamodel.facets.object.callbacks;
 
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.object.callbacks.PersistedCallbackFacet;
-import org.apache.isis.core.metamodel.facets.object.callbacks.CallbackFacetAbstract;
 
 public abstract class PersistedCallbackFacetAbstract extends CallbackFacetAbstract implements PersistedCallbackFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistingCallbackFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistingCallbackFacetAbstract.java
index b9f0323..f0ad113 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistingCallbackFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/PersistingCallbackFacetAbstract.java
@@ -21,8 +21,6 @@ package org.apache.isis.core.metamodel.facets.object.callbacks;
 
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.object.callbacks.PersistingCallbackFacet;
-import org.apache.isis.core.metamodel.facets.object.callbacks.CallbackFacetAbstract;
 
 public abstract class PersistingCallbackFacetAbstract extends CallbackFacetAbstract implements PersistingCallbackFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemoveCallbackFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemoveCallbackFacetFactory.java
index 3b5d72e..4e8e912 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemoveCallbackFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemoveCallbackFacetFactory.java
@@ -27,10 +27,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class RemoveCallbackFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemoveCallbackViaDeleteMethodFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemoveCallbackViaDeleteMethodFacetFactory.java
index 4056797..76ea149 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemoveCallbackViaDeleteMethodFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemoveCallbackViaDeleteMethodFacetFactory.java
@@ -27,10 +27,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class RemoveCallbackViaDeleteMethodFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemovingCallbackFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemovingCallbackFacetAbstract.java
index 390c771..03ac2b0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemovingCallbackFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/RemovingCallbackFacetAbstract.java
@@ -21,8 +21,6 @@ package org.apache.isis.core.metamodel.facets.object.callbacks;
 
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.object.callbacks.RemovingCallbackFacet;
-import org.apache.isis.core.metamodel.facets.object.callbacks.CallbackFacetAbstract;
 
 public abstract class RemovingCallbackFacetAbstract extends CallbackFacetAbstract implements RemovingCallbackFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdateCallbackFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdateCallbackFacetFactory.java
index fc1d149..b5e4f83 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdateCallbackFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdateCallbackFacetFactory.java
@@ -27,10 +27,10 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class UpdateCallbackFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdatedCallbackFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdatedCallbackFacetAbstract.java
index edbf7f4..9b07809 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdatedCallbackFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdatedCallbackFacetAbstract.java
@@ -21,8 +21,6 @@ package org.apache.isis.core.metamodel.facets.object.callbacks;
 
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.object.callbacks.UpdatedCallbackFacet;
-import org.apache.isis.core.metamodel.facets.object.callbacks.CallbackFacetAbstract;
 
 public abstract class UpdatedCallbackFacetAbstract extends CallbackFacetAbstract implements UpdatedCallbackFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdatingCallbackFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdatingCallbackFacetAbstract.java
index a12ea17..b79943a 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdatingCallbackFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/callbacks/UpdatingCallbackFacetAbstract.java
@@ -21,8 +21,6 @@ package org.apache.isis.core.metamodel.facets.object.callbacks;
 
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.object.callbacks.UpdatingCallbackFacet;
-import org.apache.isis.core.metamodel.facets.object.callbacks.CallbackFacetAbstract;
 
 public abstract class UpdatingCallbackFacetAbstract extends CallbackFacetAbstract implements UpdatingCallbackFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/choices/enums/EnumValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/choices/enums/EnumValueSemanticsProvider.java
index 5f92826..b96e63c 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/choices/enums/EnumValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/choices/enums/EnumValueSemanticsProvider.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.object.choices.enums;
 
 import java.lang.reflect.Method;
+
 import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.applib.adapters.Parser;
 import org.apache.isis.applib.services.i18n.TranslatableString;
@@ -31,7 +32,6 @@ import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderAndFacetAbstract;
-
 import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/cssclass/method/CssClassFacetMethod.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/cssclass/method/CssClassFacetMethod.java
index 2f0cd35..7c916e5 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/cssclass/method/CssClassFacetMethod.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/cssclass/method/CssClassFacetMethod.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.object.cssclass.method;
 
 import java.lang.reflect.Method;
+
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetAbstract;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/cssclass/method/CssClassFacetMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/cssclass/method/CssClassFacetMethodFactory.java
index b34bd30..1ce92a4 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/cssclass/method/CssClassFacetMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/cssclass/method/CssClassFacetMethodFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.object.cssclass.method;
 
 import java.lang.reflect.Method;
+
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/DefaultsProviderUtil.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/DefaultsProviderUtil.java
index 1623996..f08871f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/DefaultsProviderUtil.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/DefaultsProviderUtil.java
@@ -24,7 +24,6 @@ import com.google.common.base.Strings;
 import org.apache.isis.applib.adapters.DefaultsProvider;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.commons.lang.ClassUtil;
-import org.apache.isis.core.commons.lang.StringExtensions;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 
 public final class DefaultsProviderUtil {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/annotcfg/DefaultedFacetAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/annotcfg/DefaultedFacetAnnotation.java
index 8f44598..2ec46b0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/annotcfg/DefaultedFacetAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/annotcfg/DefaultedFacetAnnotation.java
@@ -24,9 +24,9 @@ import com.google.common.base.Strings;
 import org.apache.isis.applib.annotation.Defaulted;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.services.ServicesInjector;
 import org.apache.isis.core.metamodel.facets.object.defaults.DefaultedFacetAbstract;
 import org.apache.isis.core.metamodel.facets.object.defaults.DefaultsProviderUtil;
+import org.apache.isis.core.metamodel.services.ServicesInjector;
 
 public class DefaultedFacetAnnotation extends DefaultedFacetAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/annotcfg/DefaultedFacetFromConfiguration.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/annotcfg/DefaultedFacetFromConfiguration.java
index 0c8a0c9..6bd4dc8 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/annotcfg/DefaultedFacetFromConfiguration.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/defaults/annotcfg/DefaultedFacetFromConfiguration.java
@@ -20,8 +20,8 @@
 package org.apache.isis.core.metamodel.facets.object.defaults.annotcfg;
 
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.services.ServicesInjector;
 import org.apache.isis.core.metamodel.facets.object.defaults.DefaultedFacetAbstract;
+import org.apache.isis.core.metamodel.services.ServicesInjector;
 
 public class DefaultedFacetFromConfiguration extends DefaultedFacetAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/autocomplete/AutoCompleteFacetForAutoCompleteAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/autocomplete/AutoCompleteFacetForAutoCompleteAnnotation.java
index fc9371d..0b70098 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/autocomplete/AutoCompleteFacetForAutoCompleteAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/autocomplete/AutoCompleteFacetForAutoCompleteAnnotation.java
@@ -24,7 +24,6 @@ import java.lang.reflect.Method;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.autocomplete.AutoCompleteFacetAbstract;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
-import org.apache.isis.core.metamodel.spec.feature.ObjectAction;
 
 /**
  * @deprecated
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/objectspecid/ObjectSpecIdFacetForDomainObjectAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/objectspecid/ObjectSpecIdFacetForDomainObjectAnnotation.java
index c58a309..203b6335 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/objectspecid/ObjectSpecIdFacetForDomainObjectAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/objectspecid/ObjectSpecIdFacetForDomainObjectAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.DomainObject;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.objectspecid.ObjectSpecIdFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/objectspecid/ObjectSpecIdFacetForJdoPersistenceCapableAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/objectspecid/ObjectSpecIdFacetForJdoPersistenceCapableAnnotation.java
index ad3cd7f..fd3cfc5 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/objectspecid/ObjectSpecIdFacetForJdoPersistenceCapableAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobject/objectspecid/ObjectSpecIdFacetForJdoPersistenceCapableAnnotation.java
@@ -20,7 +20,9 @@
 package org.apache.isis.core.metamodel.facets.object.domainobject.objectspecid;
 
 import java.util.Locale;
+
 import com.google.common.base.Strings;
+
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.objectspecid.ObjectSpecIdFacet;
 import org.apache.isis.core.metamodel.facets.object.objectspecid.ObjectSpecIdFacetAbstract;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/DescribedAsFacetForViewModelLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/DescribedAsFacetForViewModelLayoutAnnotation.java
index 4e526e3..3e0858a 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/DescribedAsFacetForViewModelLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/DescribedAsFacetForViewModelLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.ViewModelLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.describedas.DescribedAsFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/NamedFacetForDomainObjectLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/NamedFacetForDomainObjectLayoutAnnotation.java
index 00b0693..be81edb 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/NamedFacetForDomainObjectLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/NamedFacetForDomainObjectLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.DomainObjectLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.named.NamedFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/NamedFacetForViewModelLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/NamedFacetForViewModelLayoutAnnotation.java
index 04e2b9a..346ccae 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/NamedFacetForViewModelLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/NamedFacetForViewModelLayoutAnnotation.java
@@ -23,12 +23,10 @@ import java.util.Objects;
 
 import com.google.common.base.Strings;
 
-import org.apache.isis.applib.annotation.DomainServiceLayout;
 import org.apache.isis.applib.annotation.ViewModelLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.named.NamedFacet;
 import org.apache.isis.core.metamodel.facets.all.named.NamedFacetAbstract;
-import org.apache.isis.core.metamodel.facets.object.domainservicelayout.NamedFacetForDomainServiceLayoutAnnotation;
 
 public class NamedFacetForViewModelLayoutAnnotation extends NamedFacetAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/PluralFacetForViewModelLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/PluralFacetForViewModelLayoutAnnotation.java
index 15d3623..bd1b0f0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/PluralFacetForViewModelLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainobjectlayout/PluralFacetForViewModelLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.ViewModelLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.plural.PluralFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainservice/annotation/DomainServiceFacetAnnotationFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainservice/annotation/DomainServiceFacetAnnotationFactory.java
index 857a06b..09e8d22 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainservice/annotation/DomainServiceFacetAnnotationFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainservice/annotation/DomainServiceFacetAnnotationFactory.java
@@ -24,7 +24,6 @@ import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import com.google.common.base.Joiner;
-import com.google.common.collect.Lists;
 
 import org.apache.isis.applib.annotation.DomainService;
 import org.apache.isis.core.commons.config.IsisConfiguration;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainservicelayout/NamedFacetForDomainServiceLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainservicelayout/NamedFacetForDomainServiceLayoutAnnotation.java
index 7a82d5c..81f9c50 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainservicelayout/NamedFacetForDomainServiceLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/domainservicelayout/NamedFacetForDomainServiceLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.DomainServiceLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.named.NamedFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/encodeable/EncoderDecoderUtil.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/encodeable/EncoderDecoderUtil.java
index 1421653..c622e5f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/encodeable/EncoderDecoderUtil.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/encodeable/EncoderDecoderUtil.java
@@ -24,7 +24,6 @@ import com.google.common.base.Strings;
 import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.commons.lang.ClassUtil;
-import org.apache.isis.core.commons.lang.StringExtensions;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 
 public final class EncoderDecoderUtil {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/facets/FacetsFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/facets/FacetsFacetAbstract.java
index edfa79d..5e6758b 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/facets/FacetsFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/facets/FacetsFacetAbstract.java
@@ -28,7 +28,6 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetAbstract;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.FacetFactory;
-import org.apache.isis.core.metamodel.facets.object.facets.FacetsFacet;
 
 public abstract class FacetsFacetAbstract extends FacetAbstract implements FacetsFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/hidden/method/HiddenObjectFacetViaMethod.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/hidden/method/HiddenObjectFacetViaMethod.java
index da646b6..ec0a008 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/hidden/method/HiddenObjectFacetViaMethod.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/hidden/method/HiddenObjectFacetViaMethod.java
@@ -25,8 +25,8 @@ import org.apache.isis.applib.services.wrapper.events.VisibilityEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
-import org.apache.isis.core.metamodel.interactions.VisibilityContext;
 import org.apache.isis.core.metamodel.facets.object.hidden.HiddenObjectFacetAbstract;
+import org.apache.isis.core.metamodel.interactions.VisibilityContext;
 
 public class HiddenObjectFacetViaMethod extends HiddenObjectFacetAbstract {
     private final Method method;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/hidden/method/HiddenObjectFacetViaMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/hidden/method/HiddenObjectFacetViaMethodFactory.java
index 154b166..bfe4251 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/hidden/method/HiddenObjectFacetViaMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/hidden/method/HiddenObjectFacetViaMethodFactory.java
@@ -25,12 +25,12 @@ import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facets.FacetedMethod;
+import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
+import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.object.hidden.HiddenObjectFacet;
 import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.spec.ObjectSpecification;
 import org.apache.isis.core.metamodel.spec.feature.ObjectMember;
-import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
-import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 
 /**
  * Installs the {@link HiddenObjectFacetViaMethod} on the
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/icon/method/IconFacetMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/icon/method/IconFacetMethodFactory.java
index 04dcf1a..ae4bed3 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/icon/method/IconFacetMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/icon/method/IconFacetMethodFactory.java
@@ -24,9 +24,9 @@ import java.lang.reflect.Method;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class IconFacetMethodFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/datanucleus/RemoveDatanucleusPersistableTypesFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/datanucleus/RemoveDatanucleusPersistableTypesFacetFactory.java
index 8fd2365..aff14be 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/datanucleus/RemoveDatanucleusPersistableTypesFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/datanucleus/RemoveDatanucleusPersistableTypesFacetFactory.java
@@ -19,8 +19,7 @@ package org.apache.isis.core.metamodel.facets.object.ignore.datanucleus;
 import java.lang.reflect.Method;
 import java.util.List;
 
-import com.google.common.collect.Lists;
-
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.factory.InstanceUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
@@ -32,7 +31,7 @@ import org.apache.isis.core.metamodel.methodutils.MethodScope;
  */
 public class RemoveDatanucleusPersistableTypesFacetFactory extends FacetFactoryAbstract {
 
-    private final List<RemoveMethodsFacetFactory.MethodAndParameterTypes> datanucleusPersistableMethodsToIgnore = Lists.newArrayList();
+    private final List<RemoveMethodsFacetFactory.MethodAndParameterTypes> datanucleusPersistableMethodsToIgnore = _Lists.newArrayList();
 
     public RemoveDatanucleusPersistableTypesFacetFactory() {
         super(FeatureType.OBJECTS_ONLY);
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/javalang/RemoveMethodsFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/javalang/RemoveMethodsFacetFactory.java
index eb9287a..37ef52c 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/javalang/RemoveMethodsFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/javalang/RemoveMethodsFacetFactory.java
@@ -22,11 +22,9 @@ package org.apache.isis.core.metamodel.facets.object.ignore.javalang;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.util.List;
-import java.util.stream.Stream;
-
-import com.google.common.collect.Lists;
 
 import org.apache.isis.commons.internal._Constants;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.lang.ClassExtensions;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
@@ -59,7 +57,7 @@ public class RemoveMethodsFacetFactory extends FacetFactoryAbstract {
 
     private final InjectorMethodEvaluator injectorMethodEvaluator = new InjectorMethodEvaluatorDefault();
 
-    private final List<MethodAndParameterTypes> javaLangObjectMethodsToIgnore = Lists.newArrayList();
+    private final List<MethodAndParameterTypes> javaLangObjectMethodsToIgnore = _Lists.newArrayList();
 
 
     public RemoveMethodsFacetFactory() {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/jdo/RemoveJdoEnhancementTypesFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/jdo/RemoveJdoEnhancementTypesFacetFactory.java
index a23eaef..49520c6 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/jdo/RemoveJdoEnhancementTypesFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/ignore/jdo/RemoveJdoEnhancementTypesFacetFactory.java
@@ -22,8 +22,7 @@ package org.apache.isis.core.metamodel.facets.object.ignore.jdo;
 import java.lang.reflect.Method;
 import java.util.List;
 
-import com.google.common.collect.Lists;
-
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.factory.InstanceUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
@@ -35,7 +34,7 @@ import org.apache.isis.core.metamodel.methodutils.MethodScope;
  */
 public class RemoveJdoEnhancementTypesFacetFactory extends FacetFactoryAbstract {
 
-    private final List<RemoveMethodsFacetFactory.MethodAndParameterTypes> jdoEnhancementmethodsToIgnore = Lists.newArrayList();
+    private final List<RemoveMethodsFacetFactory.MethodAndParameterTypes> jdoEnhancementmethodsToIgnore = _Lists.newArrayList();
 
     public RemoveJdoEnhancementTypesFacetFactory() {
         super(FeatureType.OBJECTS_ONLY);
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/navparent/method/NavigableParentFacetMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/navparent/method/NavigableParentFacetMethodFactory.java
index a67af1f..b01e829 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/navparent/method/NavigableParentFacetMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/navparent/method/NavigableParentFacetMethodFactory.java
@@ -24,9 +24,9 @@ import java.lang.reflect.Method;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 /**
  *
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectspecid/classname/ObjectSpecIdFacetDerivedFromClassNameFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectspecid/classname/ObjectSpecIdFacetDerivedFromClassNameFactory.java
index 1d24f98..e02db27 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectspecid/classname/ObjectSpecIdFacetDerivedFromClassNameFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectspecid/classname/ObjectSpecIdFacetDerivedFromClassNameFactory.java
@@ -19,7 +19,6 @@
 
 package org.apache.isis.core.metamodel.facets.object.objectspecid.classname;
 
-import java.util.List;
 import java.util.stream.Stream;
 
 import javax.xml.bind.annotation.XmlType;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectspecid/classname/ObjectSpecIdFacetDerivedFromDomainServiceAnnotationElseGetId.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectspecid/classname/ObjectSpecIdFacetDerivedFromDomainServiceAnnotationElseGetId.java
index bd5ddde..ed8abca 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectspecid/classname/ObjectSpecIdFacetDerivedFromDomainServiceAnnotationElseGetId.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectspecid/classname/ObjectSpecIdFacetDerivedFromDomainServiceAnnotationElseGetId.java
@@ -20,9 +20,7 @@
 package org.apache.isis.core.metamodel.facets.object.objectspecid.classname;
 
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.object.objectspecid.ObjectSpecIdFacet;
 import org.apache.isis.core.metamodel.facets.object.objectspecid.ObjectSpecIdFacetAbstract;
-import org.apache.isis.core.metamodel.services.ServiceUtil;
 
 public class ObjectSpecIdFacetDerivedFromDomainServiceAnnotationElseGetId extends ObjectSpecIdFacetAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectvalidprops/ObjectValidPropertiesFacet.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectvalidprops/ObjectValidPropertiesFacet.java
index 75fbf1a..f6dc13c 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectvalidprops/ObjectValidPropertiesFacet.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/objectvalidprops/ObjectValidPropertiesFacet.java
@@ -19,7 +19,6 @@
 
 package org.apache.isis.core.metamodel.facets.object.objectvalidprops;
 
-import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facets.objectvalue.mandatory.MandatoryFacet;
 import org.apache.isis.core.metamodel.interactions.ObjectValidityContext;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/parseable/ParserUtil.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/parseable/ParserUtil.java
index acc1105..35e2937 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/parseable/ParserUtil.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/parseable/ParserUtil.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.object.parseable;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.adapters.Parser;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.commons.lang.ClassUtil;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/recreatable/DisabledFacetOnPropertyDerivedFromRecreatableObjectFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/recreatable/DisabledFacetOnPropertyDerivedFromRecreatableObjectFacetFactory.java
index ba91515..66a50fc 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/recreatable/DisabledFacetOnPropertyDerivedFromRecreatableObjectFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/recreatable/DisabledFacetOnPropertyDerivedFromRecreatableObjectFacetFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.object.recreatable;
 
 import java.lang.reflect.Method;
+
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/title/annotation/TitleAnnotationFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/title/annotation/TitleAnnotationFacetFactory.java
index 21c0259..7e3e4e0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/title/annotation/TitleAnnotationFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/title/annotation/TitleAnnotationFacetFactory.java
@@ -25,7 +25,6 @@ import java.util.Comparator;
 import java.util.List;
 
 import com.google.common.base.Splitter;
-import com.google.common.collect.Lists;
 
 import org.apache.isis.applib.annotation.Title;
 import org.apache.isis.commons.internal.collections._Lists;
@@ -138,7 +137,7 @@ public class TitleAnnotationFacetFactory extends FacetFactoryAbstract implements
         }
 
         private static List<String> componentsFor(final String sequence) {
-            return Lists.newArrayList(Splitter.on('.').split(sequence));
+            return _Lists.newArrayList(Splitter.on('.').split(sequence));
         }
     }
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/title/methods/TitleFacetViaMethodsFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/title/methods/TitleFacetViaMethodsFactory.java
index 090463d..2d98785 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/title/methods/TitleFacetViaMethodsFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/title/methods/TitleFacetViaMethodsFactory.java
@@ -27,11 +27,11 @@ import org.apache.isis.core.commons.lang.ClassExtensions;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
-import org.apache.isis.core.metamodel.facets.object.title.TitleFacet;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.fallback.FallbackFacetFactory;
+import org.apache.isis.core.metamodel.facets.object.title.TitleFacet;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class TitleFacetViaMethodsFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/validating/mustsatisfyspec/MustSatisfySpecificationFromMustSatisfyAnnotationOnTypeFacet.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/validating/mustsatisfyspec/MustSatisfySpecificationFromMustSatisfyAnnotationOnTypeFacet.java
index c3de14a..aef0251 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/validating/mustsatisfyspec/MustSatisfySpecificationFromMustSatisfyAnnotationOnTypeFacet.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/validating/mustsatisfyspec/MustSatisfySpecificationFromMustSatisfyAnnotationOnTypeFacet.java
@@ -21,8 +21,8 @@ package org.apache.isis.core.metamodel.facets.object.validating.mustsatisfyspec;
 
 import java.util.List;
 
-import org.apache.isis.applib.services.wrapper.events.ValidityEvent;
 import org.apache.isis.applib.services.i18n.TranslationService;
+import org.apache.isis.applib.services.wrapper.events.ValidityEvent;
 import org.apache.isis.applib.spec.Specification;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.Facet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/validating/validateobject/method/ValidateObjectFacetMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/validating/validateobject/method/ValidateObjectFacetMethodFactory.java
index 97c13e4..738ec47 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/validating/validateobject/method/ValidateObjectFacetMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/validating/validateobject/method/ValidateObjectFacetMethodFactory.java
@@ -27,9 +27,9 @@ import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facetapi.IdentifiedHolder;
-import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
+import org.apache.isis.core.metamodel.methodutils.MethodScope;
 
 public class ValidateObjectFacetMethodFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/EqualByContentFacet.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/EqualByContentFacet.java
index 2e1c9ea..4f73ebb 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/EqualByContentFacet.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/EqualByContentFacet.java
@@ -21,7 +21,6 @@ package org.apache.isis.core.metamodel.facets.object.value;
 
 import org.apache.isis.core.metamodel.facets.MarkerFacet;
 import org.apache.isis.core.metamodel.facets.object.immutable.ImmutableFacet;
-import org.apache.isis.core.metamodel.facets.object.value.ValueFacet;
 
 /**
  * Indicates that the instances of this class are equal-by-content.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetAnnotation.java
index 38dd0c9..ca7f7bb 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetAnnotation.java
@@ -25,7 +25,6 @@ import org.apache.isis.applib.annotation.Value;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.value.ValueFacetAbstract;
-
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderUtil;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetAnnotationOrConfigurationFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetAnnotationOrConfigurationFactory.java
index 49846e8..84b109b 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetAnnotationOrConfigurationFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetAnnotationOrConfigurationFactory.java
@@ -37,7 +37,6 @@ import org.apache.isis.core.metamodel.facets.object.parseable.ParseableFacet;
 import org.apache.isis.core.metamodel.facets.object.title.TitleFacet;
 import org.apache.isis.core.metamodel.facets.object.value.EqualByContentFacet;
 import org.apache.isis.core.metamodel.facets.object.value.ValueFacet;
-
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderUtil;
 
 /**
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetFromConfiguration.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetFromConfiguration.java
index 6f36fa0..e8c6783 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetFromConfiguration.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/annotcfg/ValueFacetFromConfiguration.java
@@ -19,10 +19,8 @@
 
 package org.apache.isis.core.metamodel.facets.object.value.annotcfg;
 
-import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.value.ValueFacetAbstract;
-
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderUtil;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/vsp/ValueFacetUsingSemanticsProviderFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/vsp/ValueFacetUsingSemanticsProviderFactory.java
index 7f0bf22..c1d57a0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/vsp/ValueFacetUsingSemanticsProviderFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/object/value/vsp/ValueFacetUsingSemanticsProviderFactory.java
@@ -23,7 +23,6 @@ import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
-import org.apache.isis.core.metamodel.services.persistsession.PersistenceSessionServiceInternal;
 
 public abstract class ValueFacetUsingSemanticsProviderFactory<T> extends FacetFactoryAbstract  {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/objectvalue/mustsatisfyspec/MustSatisfySpecificationFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/objectvalue/mustsatisfyspec/MustSatisfySpecificationFacetAbstract.java
index 4dd9533..3d62f79 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/objectvalue/mustsatisfyspec/MustSatisfySpecificationFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/objectvalue/mustsatisfyspec/MustSatisfySpecificationFacetAbstract.java
@@ -21,11 +21,10 @@ package org.apache.isis.core.metamodel.facets.objectvalue.mustsatisfyspec;
 
 import java.util.List;
 
-import com.google.common.collect.Lists;
-
 import org.apache.isis.applib.services.i18n.TranslationService;
 import org.apache.isis.applib.services.wrapper.events.ValidityEvent;
 import org.apache.isis.applib.spec.Specification;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetAbstract;
@@ -93,7 +92,7 @@ public abstract class MustSatisfySpecificationFacetAbstract extends FacetAbstrac
      * For benefit of subclasses.
      */
     protected static List<Specification> specificationsFor(final Class<?>[] values) {
-        final List<Specification> specifications = Lists.newArrayList();
+        final List<Specification> specifications = _Lists.newArrayList();
         for (final Class<?> value : values) {
             final Specification specification = newSpecificationElseNull(value);
             if (specification != null) {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/choices/methodnum/ActionParameterChoicesFacetViaMethodFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/choices/methodnum/ActionParameterChoicesFacetViaMethodFactory.java
index 37f6623..06d067b 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/choices/methodnum/ActionParameterChoicesFacetViaMethodFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/choices/methodnum/ActionParameterChoicesFacetViaMethodFactory.java
@@ -39,7 +39,6 @@ import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
 import org.apache.isis.core.metamodel.facets.param.choices.ActionChoicesFacet;
 import org.apache.isis.core.metamodel.methodutils.MethodScope;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
-import org.apache.isis.core.metamodel.services.persistsession.PersistenceSessionServiceInternal;
 
 public class ActionParameterChoicesFacetViaMethodFactory extends MethodPrefixBasedFacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/defaults/ActionParameterDefaultsFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/defaults/ActionParameterDefaultsFacetAbstract.java
index be7223f..8d8ccdf 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/defaults/ActionParameterDefaultsFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/defaults/ActionParameterDefaultsFacetAbstract.java
@@ -22,7 +22,6 @@ package org.apache.isis.core.metamodel.facets.param.defaults;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetAbstract;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.param.defaults.ActionParameterDefaultsFacet;
 
 public abstract class ActionParameterDefaultsFacetAbstract extends FacetAbstract implements ActionParameterDefaultsFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/defaults/fromtype/ActionParameterDefaultFacetDerivedFromTypeFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/defaults/fromtype/ActionParameterDefaultFacetDerivedFromTypeFactory.java
index 2144b91..027d89f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/defaults/fromtype/ActionParameterDefaultFacetDerivedFromTypeFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/defaults/fromtype/ActionParameterDefaultFacetDerivedFromTypeFactory.java
@@ -23,8 +23,8 @@ import org.apache.isis.core.metamodel.facetapi.FacetUtil;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
 import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.actions.defaults.ActionDefaultsFacet;
-import org.apache.isis.core.metamodel.spec.ObjectSpecification;
 import org.apache.isis.core.metamodel.facets.object.defaults.DefaultedFacet;
+import org.apache.isis.core.metamodel.spec.ObjectSpecification;
 
 public class ActionParameterDefaultFacetDerivedFromTypeFactory extends FacetFactoryAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/CssClassFacetForParameterLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/CssClassFacetForParameterLayoutAnnotation.java
index 8969db8..095d240 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/CssClassFacetForParameterLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/CssClassFacetForParameterLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.ParameterLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.members.cssclass.CssClassFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/DescribedAsFacetForParameterLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/DescribedAsFacetForParameterLayoutAnnotation.java
index 29f83c5..081dd27 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/DescribedAsFacetForParameterLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/DescribedAsFacetForParameterLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.ParameterLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.describedas.DescribedAsFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/NamedFacetForParameterLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/NamedFacetForParameterLayoutAnnotation.java
index e1aab75..3567b09 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/NamedFacetForParameterLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/param/layout/NamedFacetForParameterLayoutAnnotation.java
@@ -27,7 +27,6 @@ import org.apache.isis.applib.annotation.ParameterLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.named.NamedFacet;
 import org.apache.isis.core.metamodel.facets.all.named.NamedFacetAbstract;
-import org.apache.isis.core.metamodel.facets.properties.propertylayout.NamedFacetForPropertyLayoutAnnotation;
 
 public class NamedFacetForParameterLayoutAnnotation extends NamedFacetAbstract {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/autocomplete/PropertyAutoCompleteFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/autocomplete/PropertyAutoCompleteFacetAbstract.java
index 0c94ead..262887c 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/autocomplete/PropertyAutoCompleteFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/autocomplete/PropertyAutoCompleteFacetAbstract.java
@@ -22,7 +22,6 @@ package org.apache.isis.core.metamodel.facets.properties.autocomplete;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetAbstract;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.properties.autocomplete.PropertyAutoCompleteFacet;
 
 public abstract class PropertyAutoCompleteFacetAbstract extends FacetAbstract implements PropertyAutoCompleteFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/defaults/PropertyDefaultFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/defaults/PropertyDefaultFacetAbstract.java
index dc3d0e5..92be45e 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/defaults/PropertyDefaultFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/defaults/PropertyDefaultFacetAbstract.java
@@ -22,7 +22,6 @@ package org.apache.isis.core.metamodel.facets.properties.defaults;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetAbstract;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.properties.defaults.PropertyDefaultFacet;
 
 public abstract class PropertyDefaultFacetAbstract extends FacetAbstract implements PropertyDefaultFacet {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/hidden/HiddenFacetForPropertyAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/hidden/HiddenFacetForPropertyAnnotation.java
index 502dff3..46169f9 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/hidden/HiddenFacetForPropertyAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/hidden/HiddenFacetForPropertyAnnotation.java
@@ -21,12 +21,10 @@ package org.apache.isis.core.metamodel.facets.properties.property.hidden;
 
 import java.util.List;
 
-import org.apache.isis.applib.annotation.Action;
 import org.apache.isis.applib.annotation.Property;
 import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-import org.apache.isis.core.metamodel.facets.actions.action.hidden.HiddenFacetForActionAnnotation;
 import org.apache.isis.core.metamodel.facets.all.hide.HiddenFacet;
 import org.apache.isis.core.metamodel.facets.members.hidden.HiddenFacetAbstract;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/modify/PropertyDomainEventFacetAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/modify/PropertyDomainEventFacetAbstract.java
index 8c4be3c..2a49f6d 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/modify/PropertyDomainEventFacetAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/modify/PropertyDomainEventFacetAbstract.java
@@ -19,13 +19,13 @@
 
 package org.apache.isis.core.metamodel.facets.properties.property.modify;
 
-import org.apache.isis.applib.services.wrapper.events.UsabilityEvent;
-import org.apache.isis.applib.services.wrapper.events.ValidityEvent;
-import org.apache.isis.applib.services.wrapper.events.VisibilityEvent;
 import org.apache.isis.applib.events.domain.AbstractDomainEvent;
 import org.apache.isis.applib.events.domain.PropertyDomainEvent;
 import org.apache.isis.applib.services.i18n.TranslatableString;
 import org.apache.isis.applib.services.i18n.TranslationService;
+import org.apache.isis.applib.services.wrapper.events.UsabilityEvent;
+import org.apache.isis.applib.services.wrapper.events.ValidityEvent;
+import org.apache.isis.applib.services.wrapper.events.VisibilityEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.IdentifiedHolder;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/regex/RegExFacetForPropertyAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/regex/RegExFacetForPropertyAnnotation.java
index 297e72f..d8d160f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/regex/RegExFacetForPropertyAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/property/regex/RegExFacetForPropertyAnnotation.java
@@ -21,7 +21,9 @@ package org.apache.isis.core.metamodel.facets.properties.property.regex;
 
 import java.util.List;
 import java.util.regex.Pattern;
+
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.Property;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.Annotations;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/propertylayout/CssClassFacetForPropertyLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/propertylayout/CssClassFacetForPropertyLayoutAnnotation.java
index 6c4c5f5..17818e6 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/propertylayout/CssClassFacetForPropertyLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/propertylayout/CssClassFacetForPropertyLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.PropertyLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.members.cssclass.CssClassFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/propertylayout/DescribedAsFacetForPropertyLayoutAnnotation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/propertylayout/DescribedAsFacetForPropertyLayoutAnnotation.java
index 24e3742..e1b3f58 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/propertylayout/DescribedAsFacetForPropertyLayoutAnnotation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/propertylayout/DescribedAsFacetForPropertyLayoutAnnotation.java
@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.Objects;
 
 import com.google.common.base.Strings;
+
 import org.apache.isis.applib.annotation.PropertyLayout;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.all.describedas.DescribedAsFacet;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/update/PropertySetAndClearFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/update/PropertySetAndClearFacetFactory.java
index 559004d..4cb68c3 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/update/PropertySetAndClearFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/properties/update/PropertySetAndClearFacetFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.properties.update;
 
 import java.lang.reflect.Method;
+
 import org.apache.isis.core.commons.lang.StringExtensions;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FacetUtil;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/JodaFunctions.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/JodaFunctions.java
index 62b5002..0935f6d 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/JodaFunctions.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/JodaFunctions.java
@@ -20,7 +20,6 @@
 package org.apache.isis.core.metamodel.facets.value;
 
 import java.util.Locale;
-
 import java.util.function.Function;
 
 import org.joda.time.format.DateTimeFormatter;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/bigdecimal/BigDecimalValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/bigdecimal/BigDecimalValueSemanticsProvider.java
index c61b3df..75f7ca3 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/bigdecimal/BigDecimalValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/bigdecimal/BigDecimalValueSemanticsProvider.java
@@ -31,7 +31,6 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderAndFacetAbstract;
-
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 
 public class BigDecimalValueSemanticsProvider extends ValueSemanticsProviderAndFacetAbstract<BigDecimal> implements BigDecimalValueFacet {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/booleans/BooleanWrapperValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/booleans/BooleanWrapperValueSemanticsProvider.java
index 69431bd..65e0434 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/booleans/BooleanWrapperValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/booleans/BooleanWrapperValueSemanticsProvider.java
@@ -21,7 +21,6 @@ package org.apache.isis.core.metamodel.facets.value.booleans;
 
 import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.applib.adapters.Parser;
-import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejdk8local/Jdk8LocalDateUtil.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejdk8local/Jdk8LocalDateUtil.java
index 8570662..da56196 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejdk8local/Jdk8LocalDateUtil.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejdk8local/Jdk8LocalDateUtil.java
@@ -25,9 +25,10 @@ import java.util.List;
 import java.util.Locale;
 import java.util.StringTokenizer;
 
-import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
 import org.joda.time.format.DateTimeFormat;
 
+import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
+
 final class Jdk8LocalDateUtil  {
 
     private Jdk8LocalDateUtil(){}
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejdk8local/Jdk8LocalDateValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejdk8local/Jdk8LocalDateValueSemanticsProvider.java
index 5f38ef3..0ce31eb 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejdk8local/Jdk8LocalDateValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejdk8local/Jdk8LocalDateValueSemanticsProvider.java
@@ -29,8 +29,11 @@ import java.time.format.DateTimeFormatter;
 import java.util.List;
 import java.util.Map;
 
+import com.google.common.collect.Maps;
+
 import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.applib.adapters.EncodingException;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.config.ConfigurationConstants;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.Facet;
@@ -39,9 +42,6 @@ import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProv
 import org.apache.isis.core.metamodel.facets.value.datejodalocal.JodaLocalDateValueFacet;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
-
 public class Jdk8LocalDateValueSemanticsProvider extends ValueSemanticsProviderAndFacetAbstract<LocalDate> implements Jdk8LocalDateValueFacet {
 
     public static final int MAX_LENGTH = 12;
@@ -106,7 +106,7 @@ public class Jdk8LocalDateValueSemanticsProvider extends ValueSemanticsProviderA
     };
 
 
-    private final static List<TimeParser> PARSE_FORMATTERS = Lists.newArrayList();
+    private final static List<TimeParser> PARSE_FORMATTERS = _Lists.newArrayList();
     static {
         PARSE_FORMATTERS.add(parserOfStyle("L-"));
         PARSE_FORMATTERS.add(parserOfStyle("M-"));
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejodalocal/JodaLocalDateValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejodalocal/JodaLocalDateValueSemanticsProvider.java
index b72c63a..c8fd664 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejodalocal/JodaLocalDateValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datejodalocal/JodaLocalDateValueSemanticsProvider.java
@@ -23,7 +23,6 @@ import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
 import org.joda.time.LocalDate;
@@ -33,6 +32,7 @@ import org.joda.time.format.DateTimeFormatter;
 import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.applib.adapters.EncodingException;
 import org.apache.isis.applib.adapters.Parser;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.config.ConfigurationConstants;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.Facet;
@@ -105,7 +105,7 @@ public class JodaLocalDateValueSemanticsProvider extends ValueSemanticsProviderA
     };
 
 
-    private final static List<DateTimeFormatter> PARSE_FORMATTERS = Lists.newArrayList();
+    private final static List<DateTimeFormatter> PARSE_FORMATTERS = _Lists.newArrayList();
     static {
         PARSE_FORMATTERS.add(DateTimeFormat.forStyle("L-"));
         PARSE_FORMATTERS.add(DateTimeFormat.forStyle("M-"));
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datesql/JavaSqlDateValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datesql/JavaSqlDateValueSemanticsProvider.java
index 2a19c18..a240e27 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datesql/JavaSqlDateValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datesql/JavaSqlDateValueSemanticsProvider.java
@@ -26,7 +26,6 @@ import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.applib.adapters.Parser;
 import org.apache.isis.applib.clock.Clock;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-
 import org.apache.isis.core.metamodel.facets.value.date.DateValueSemanticsProviderAbstract;
 import org.apache.isis.core.metamodel.facets.value.dateutil.JavaUtilDateValueSemanticsProvider;
 import org.apache.isis.core.metamodel.facets.value.timesql.JavaSqlTimeValueSemanticsProvider;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejdk8local/Jdk8LocalDateTimeValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejdk8local/Jdk8LocalDateTimeValueSemanticsProvider.java
index 1a8fc90..b67d591 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejdk8local/Jdk8LocalDateTimeValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejdk8local/Jdk8LocalDateTimeValueSemanticsProvider.java
@@ -27,19 +27,20 @@ import java.time.format.DateTimeFormatter;
 import java.util.List;
 import java.util.Map;
 
+import com.google.common.collect.Maps;
+
+import org.joda.time.format.DateTimeFormat;
+import org.joda.time.format.ISODateTimeFormat;
+
 import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.applib.adapters.EncodingException;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.config.ConfigurationConstants;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderAndFacetAbstract;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
-import org.joda.time.format.DateTimeFormat;
-import org.joda.time.format.ISODateTimeFormat;
-
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
 
 
 public class Jdk8LocalDateTimeValueSemanticsProvider extends ValueSemanticsProviderAndFacetAbstract<LocalDateTime> implements Jdk8LocalDateTimeValueFacet {
@@ -106,7 +107,7 @@ public class Jdk8LocalDateTimeValueSemanticsProvider extends ValueSemanticsProvi
     };
 
 
-    private final static List<TimeParser> PARSE_FORMATTERS = Lists.newArrayList();
+    private final static List<TimeParser> PARSE_FORMATTERS = _Lists.newArrayList();
     static {
         PARSE_FORMATTERS.add(parserOf(DateTimeFormat.forStyle("LL")));
         PARSE_FORMATTERS.add(parserOf(DateTimeFormat.forStyle("MM")));
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejoda/JodaDateTimeValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejoda/JodaDateTimeValueSemanticsProvider.java
index 79796f5..6c75a21 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejoda/JodaDateTimeValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejoda/JodaDateTimeValueSemanticsProvider.java
@@ -21,16 +21,15 @@ package org.apache.isis.core.metamodel.facets.value.datetimejoda;
 
 import java.util.Date;
 
-import org.apache.isis.applib.adapters.EncodingException;
-import org.apache.isis.core.metamodel.services.ServicesInjector;
 import org.joda.time.DateTime;
+import org.joda.time.format.DateTimeFormatter;
+import org.joda.time.format.ISODateTimeFormat;
 
 import org.apache.isis.applib.adapters.EncoderDecoder;
+import org.apache.isis.applib.adapters.EncodingException;
 import org.apache.isis.applib.adapters.Parser;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-
-import org.joda.time.format.DateTimeFormatter;
-import org.joda.time.format.ISODateTimeFormat;
+import org.apache.isis.core.metamodel.services.ServicesInjector;
 
 public class JodaDateTimeValueSemanticsProvider extends JodaDateTimeValueSemanticsProviderAbstract<DateTime> {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejodalocal/JodaLocalDateTimeValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejodalocal/JodaLocalDateTimeValueSemanticsProvider.java
index bc0db1c..45ac1d3 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejodalocal/JodaLocalDateTimeValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/datetimejodalocal/JodaLocalDateTimeValueSemanticsProvider.java
@@ -23,7 +23,6 @@ import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
 import org.joda.time.LocalDateTime;
@@ -34,6 +33,7 @@ import org.joda.time.format.ISODateTimeFormat;
 import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.applib.adapters.EncodingException;
 import org.apache.isis.applib.adapters.Parser;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.config.ConfigurationConstants;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.Facet;
@@ -106,7 +106,7 @@ public class JodaLocalDateTimeValueSemanticsProvider extends ValueSemanticsProvi
     };
 
 
-    private final static List<DateTimeFormatter> PARSE_FORMATTERS = Lists.newArrayList();
+    private final static List<DateTimeFormatter> PARSE_FORMATTERS = _Lists.newArrayList();
     static {
         PARSE_FORMATTERS.add(DateTimeFormat.forStyle("LL"));
         PARSE_FORMATTERS.add(DateTimeFormat.forStyle("MM"));
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/dateutil/JavaUtilDateValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/dateutil/JavaUtilDateValueSemanticsProvider.java
index f486237..50a8c69 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/dateutil/JavaUtilDateValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/dateutil/JavaUtilDateValueSemanticsProvider.java
@@ -26,7 +26,6 @@ import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.applib.adapters.Parser;
 import org.apache.isis.applib.clock.Clock;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-
 import org.apache.isis.core.metamodel.facets.value.DateAndTimeValueSemanticsProviderAbstract;
 import org.apache.isis.core.metamodel.facets.value.datesql.JavaSqlDateValueSemanticsProvider;
 import org.apache.isis.core.metamodel.facets.value.timesql.JavaSqlTimeValueSemanticsProvider;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/imageawt/JavaAwtImageValueFacetUsingSemanticsProviderFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/imageawt/JavaAwtImageValueFacetUsingSemanticsProviderFactory.java
index 03108fd..012cd77 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/imageawt/JavaAwtImageValueFacetUsingSemanticsProviderFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/imageawt/JavaAwtImageValueFacetUsingSemanticsProviderFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.value.imageawt;
 
 import java.awt.Image;
+
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueFacetUsingSemanticsProviderFactory;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/money/MoneyValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/money/MoneyValueSemanticsProvider.java
index b48ccdb..7ad7a2f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/money/MoneyValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/money/MoneyValueSemanticsProvider.java
@@ -32,8 +32,8 @@ import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
-import org.apache.isis.core.metamodel.facets.properties.defaults.PropertyDefaultFacet;
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderAndFacetAbstract;
+import org.apache.isis.core.metamodel.facets.properties.defaults.PropertyDefaultFacet;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 
 public class MoneyValueSemanticsProvider extends ValueSemanticsProviderAndFacetAbstract<Money> implements MoneyValueFacet {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/percentage/PercentageValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/percentage/PercentageValueSemanticsProvider.java
index e8b1a32..a057a50 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/percentage/PercentageValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/percentage/PercentageValueSemanticsProvider.java
@@ -32,7 +32,6 @@ import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.parseable.TextEntryParseException;
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueSemanticsProviderAndFacetAbstract;
-
 import org.apache.isis.core.metamodel.facets.value.floats.FloatingPointValueFacet;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timesql/JavaSqlTimeValueFacetUsingSemanticsProviderFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timesql/JavaSqlTimeValueFacetUsingSemanticsProviderFactory.java
index d5ae4a7..90c3db5 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timesql/JavaSqlTimeValueFacetUsingSemanticsProviderFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timesql/JavaSqlTimeValueFacetUsingSemanticsProviderFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.value.timesql;
 
 import java.sql.Time;
+
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueFacetUsingSemanticsProviderFactory;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timesql/JavaSqlTimeValueSemanticsProvider.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timesql/JavaSqlTimeValueSemanticsProvider.java
index a1f53cf..6466495 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timesql/JavaSqlTimeValueSemanticsProvider.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timesql/JavaSqlTimeValueSemanticsProvider.java
@@ -31,7 +31,6 @@ import org.apache.isis.applib.adapters.EncoderDecoder;
 import org.apache.isis.applib.adapters.Parser;
 import org.apache.isis.applib.clock.Clock;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
-
 import org.apache.isis.core.metamodel.facets.value.time.TimeValueSemanticsProviderAbstract;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timestampsql/JavaSqlTimeStampValueFacetUsingSemanticsProviderFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timestampsql/JavaSqlTimeStampValueFacetUsingSemanticsProviderFactory.java
index f715008..cc7a358 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timestampsql/JavaSqlTimeStampValueFacetUsingSemanticsProviderFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/timestampsql/JavaSqlTimeStampValueFacetUsingSemanticsProviderFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.value.timestampsql;
 
 import java.sql.Timestamp;
+
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueFacetUsingSemanticsProviderFactory;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/url/URLValueFacetUsingSemanticsProviderFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/url/URLValueFacetUsingSemanticsProviderFactory.java
index 7ccfdf6..42a803f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/url/URLValueFacetUsingSemanticsProviderFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/facets/value/url/URLValueFacetUsingSemanticsProviderFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.core.metamodel.facets.value.url;
 
 import java.net.URL;
+
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.object.value.vsp.ValueFacetUsingSemanticsProviderFactory;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionArgValidityContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionArgValidityContext.java
index 0d9a458..dff5dd7 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionArgValidityContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionArgValidityContext.java
@@ -19,6 +19,8 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.services.wrapper.events.ActionArgumentEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
@@ -26,8 +28,6 @@ import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 import org.apache.isis.core.metamodel.spec.feature.ObjectAction;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link ActionArgumentEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionUsabilityContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionUsabilityContext.java
index b0f17ce..8646637 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionUsabilityContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionUsabilityContext.java
@@ -19,6 +19,8 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.applib.services.wrapper.events.ActionUsabilityEvent;
@@ -27,8 +29,6 @@ import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 import org.apache.isis.core.metamodel.spec.feature.ObjectAction;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link ActionUsabilityEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionValidityContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionValidityContext.java
index 3fab1bf..217ed73 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionValidityContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionValidityContext.java
@@ -19,6 +19,8 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.services.wrapper.events.ActionInvocationEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
@@ -26,8 +28,6 @@ import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 import org.apache.isis.core.metamodel.spec.feature.ObjectAction;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link ActionInvocationEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionVisibilityContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionVisibilityContext.java
index e448710..cfe6e43 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionVisibilityContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ActionVisibilityContext.java
@@ -19,6 +19,8 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.applib.services.wrapper.events.ActionVisibilityEvent;
@@ -27,8 +29,6 @@ import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 import org.apache.isis.core.metamodel.spec.feature.ObjectAction;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link ActionVisibilityEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionAccessContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionAccessContext.java
index b0b0cf0..1d64405 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionAccessContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionAccessContext.java
@@ -19,14 +19,14 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.services.wrapper.events.CollectionAccessEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link CollectionAccessEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionRemoveFromContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionRemoveFromContext.java
index d332434..4c84979 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionRemoveFromContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionRemoveFromContext.java
@@ -19,14 +19,14 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.services.wrapper.events.CollectionRemoveFromEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link CollectionRemoveFromEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionVisibilityContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionVisibilityContext.java
index f2d1107..dd27385 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionVisibilityContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/CollectionVisibilityContext.java
@@ -19,6 +19,8 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.applib.services.wrapper.events.CollectionVisibilityEvent;
@@ -26,8 +28,6 @@ import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link CollectionVisibilityEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectTitleContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectTitleContext.java
index dc38c3c..128cbbf 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectTitleContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectTitleContext.java
@@ -19,14 +19,14 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.services.wrapper.events.ObjectTitleEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link ObjectTitleEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectValidityContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectValidityContext.java
index 87b6046..d9361a8 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectValidityContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectValidityContext.java
@@ -19,14 +19,14 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.services.wrapper.events.ObjectValidityEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link ObjectValidityEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectVisibilityContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectVisibilityContext.java
index bf4cc30..95188d0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectVisibilityContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ObjectVisibilityContext.java
@@ -19,6 +19,8 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.applib.services.wrapper.events.ObjectVisibilityEvent;
@@ -26,8 +28,6 @@ import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link org.apache.isis.core.metamodel.interactions.InteractionContext} for overview; analogous to
  * {@link ObjectVisibilityEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ParseValueContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ParseValueContext.java
index 88454b7..92ab38b 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ParseValueContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/ParseValueContext.java
@@ -19,14 +19,14 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.services.wrapper.events.ParseValueEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link ParseValueEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyAccessContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyAccessContext.java
index 6d514e1..a07e78f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyAccessContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyAccessContext.java
@@ -19,14 +19,14 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.services.wrapper.events.PropertyAccessEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link PropertyAccessEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyModifyContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyModifyContext.java
index acf7f60..bf15663 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyModifyContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyModifyContext.java
@@ -19,14 +19,14 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.services.wrapper.events.PropertyModifyEvent;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link PropertyModifyEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyUsabilityContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyUsabilityContext.java
index d7d2fe5..045c075 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyUsabilityContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyUsabilityContext.java
@@ -19,6 +19,8 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.applib.services.wrapper.events.PropertyUsabilityEvent;
@@ -26,8 +28,6 @@ import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link PropertyUsabilityEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyVisibilityContext.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyVisibilityContext.java
index 7fe71f6..dc797e8 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyVisibilityContext.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/interactions/PropertyVisibilityContext.java
@@ -19,6 +19,8 @@
 
 package org.apache.isis.core.metamodel.interactions;
 
+import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
+
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.applib.services.wrapper.events.PropertyVisibilityEvent;
@@ -26,8 +28,6 @@ import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionContextType;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
-import static org.apache.isis.core.metamodel.adapter.ObjectAdapter.Util.unwrap;
-
 /**
  * See {@link InteractionContext} for overview; analogous to
  * {@link PropertyVisibilityEvent}.
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/layout/DeweyOrderSet.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/layout/DeweyOrderSet.java
index 0fc1b99..06478bf 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/layout/DeweyOrderSet.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/layout/DeweyOrderSet.java
@@ -29,11 +29,10 @@ import java.util.SortedSet;
 import java.util.StringTokenizer;
 import java.util.TreeSet;
 
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
 
-import org.apache.isis.core.metamodel.facetapi.FacetHolder;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.facetapi.IdentifiedHolder;
 import org.apache.isis.core.metamodel.facets.FacetedMethod;
 import org.apache.isis.core.metamodel.facets.members.order.MemberOrderFacet;
@@ -171,7 +170,7 @@ public class DeweyOrderSet implements Comparable<DeweyOrderSet>, Iterable<Object
 
     // /////////////////////////////////////////////////////////////////////////
 
-    private final List<Object> elements = Lists.newArrayList();
+    private final List<Object> elements = _Lists.newArrayList();
     private final String groupFullName;
     private final String groupName;
     private final String groupPath;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/postprocessors/param/ActionCollectionParameterDefaultsAndChoicesPostProcessor.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/postprocessors/param/ActionCollectionParameterDefaultsAndChoicesPostProcessor.java
index b04fda2..3250e7e 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/postprocessors/param/ActionCollectionParameterDefaultsAndChoicesPostProcessor.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/postprocessors/param/ActionCollectionParameterDefaultsAndChoicesPostProcessor.java
@@ -24,8 +24,8 @@ import java.util.stream.Stream;
 
 import com.google.common.collect.FluentIterable;
 import com.google.common.collect.ImmutableList;
-import com.google.common.collect.Lists;
 
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.authentication.AuthenticationSessionProvider;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapterProvider;
 import org.apache.isis.core.metamodel.deployment.DeploymentCategory;
@@ -150,7 +150,7 @@ ServicesInjectorAware {
     }
 
     private List<ActionType> inferActionTypes() {
-        final List<ActionType> actionTypes = Lists.newArrayList();
+        final List<ActionType> actionTypes = _Lists.newArrayList();
         actionTypes.add(ActionType.USER);
         final DeploymentCategory deploymentCategory = getDeploymentCategory();
         if ( !deploymentCategory.isProduction()) {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/progmodel/DeprecatedMarker.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/progmodel/DeprecatedMarker.java
index 182b73d..5e0321b 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/progmodel/DeprecatedMarker.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/progmodel/DeprecatedMarker.java
@@ -19,8 +19,6 @@
 
 package org.apache.isis.core.metamodel.progmodel;
 
-import org.apache.isis.core.metamodel.facetapi.Facet;
-
 /**
  * Marker interface for deprecated facet factories, so that they can be ignored via a configuration property.
  *
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/progmodel/ProgrammingModelAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/progmodel/ProgrammingModelAbstract.java
index baa5c05..e8d96cf 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/progmodel/ProgrammingModelAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/progmodel/ProgrammingModelAbstract.java
@@ -23,8 +23,7 @@ import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 
-import com.google.common.collect.Lists;
-
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.commons.factory.InstanceUtil;
 import org.apache.isis.core.metamodel.facetapi.MetaModelValidatorRefiner;
@@ -34,8 +33,8 @@ import org.apache.isis.progmodels.dflt.ProgrammingModelFacetsJava5;
 
 public abstract class ProgrammingModelAbstract implements ProgrammingModel {
 
-    private final List<FacetFactory> facetFactories = Lists.newArrayList();
-    private final List<Object> facetFactoryInstancesOrClasses = Lists.newLinkedList();
+    private final List<FacetFactory> facetFactories = _Lists.newArrayList();
+    private final List<Object> facetFactoryInstancesOrClasses = _Lists.newLinkedList();
 
     public static final String KEY_IGNORE_DEPRECATED = "isis.reflector.facets.ignoreDeprecated";
 
@@ -127,7 +126,7 @@ public abstract class ProgrammingModelAbstract implements ProgrammingModel {
                     return;
                 }
             } else if (facetFactoryInstanceOrClass instanceof Class) {
-                if(DeprecatedMarker.class.isAssignableFrom((Class)facetFactoryInstanceOrClass)) {
+                if(DeprecatedMarker.class.isAssignableFrom((Class<?>)facetFactoryInstanceOrClass)) {
                     return;
                 }
             }
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/appfeat/ApplicationFeatureRepositoryDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/appfeat/ApplicationFeatureRepositoryDefault.java
index f250e18..a166ebd 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/appfeat/ApplicationFeatureRepositoryDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/appfeat/ApplicationFeatureRepositoryDefault.java
@@ -30,7 +30,6 @@ import java.util.stream.Collectors;
 
 import javax.annotation.PostConstruct;
 
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
 import org.apache.isis.applib.annotation.DomainService;
@@ -43,6 +42,7 @@ import org.apache.isis.applib.services.appfeat.ApplicationFeatureRepository;
 import org.apache.isis.applib.services.appfeat.ApplicationMemberType;
 import org.apache.isis.applib.services.config.ConfigurationService;
 import org.apache.isis.applib.services.registry.ServiceRegistry;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facets.SingleIntValueFacet;
 import org.apache.isis.core.metamodel.facets.all.hide.HiddenFacet;
@@ -124,7 +124,7 @@ public class ApplicationFeatureRepositoryDefault implements ApplicationFeatureRe
 
     private void createApplicationFeaturesFor(final Collection<ObjectSpecification> specifications) {
         // take copy to avoid ConcurrentModificationException
-        final List<ObjectSpecification> objectSpecifications = Lists.newArrayList(specifications);
+        final List<ObjectSpecification> objectSpecifications = _Lists.newArrayList(specifications);
         for (final ObjectSpecification spec : objectSpecifications) {
             createApplicationFeaturesFor(spec);
         }
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/bookmarks/BookmarkServiceInternalDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/bookmarks/BookmarkServiceInternalDefault.java
index b013d5f..d50ce98 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/bookmarks/BookmarkServiceInternalDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/bookmarks/BookmarkServiceInternalDefault.java
@@ -27,6 +27,8 @@ import java.util.Set;
 
 import javax.inject.Inject;
 
+import com.google.common.collect.Maps;
+
 import org.apache.isis.applib.annotation.DomainService;
 import org.apache.isis.applib.annotation.NatureOfService;
 import org.apache.isis.applib.annotation.Programmatic;
@@ -43,8 +45,6 @@ import org.apache.isis.commons.internal.memento._Mementos.SerializingAdapter;
 import org.apache.isis.core.metamodel.services.persistsession.PersistenceSessionServiceInternal;
 import org.apache.isis.core.runtime.persistence.ObjectNotFoundException;
 
-import com.google.common.collect.Maps;
-
 /**
  * This service enables a serializable &quot;bookmark&quot; to be created for an entity.
  *
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/config/ConfigurationServiceDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/config/ConfigurationServiceDefault.java
index c8f9bd1..5f28e8a 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/config/ConfigurationServiceDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/config/ConfigurationServiceDefault.java
@@ -28,6 +28,9 @@ import java.util.TreeSet;
 
 import javax.annotation.PostConstruct;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import org.apache.isis.applib.annotation.DomainService;
 import org.apache.isis.applib.annotation.NatureOfService;
 import org.apache.isis.applib.annotation.Programmatic;
@@ -38,8 +41,6 @@ import org.apache.isis.commons.internal.collections._Maps;
 import org.apache.isis.commons.internal.collections._Sets;
 import org.apache.isis.core.commons.config.IsisConfigurationDefault;
 import org.apache.isis.core.metamodel.services.configinternal.ConfigurationServiceInternal;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 /**
  * This is the implementation of the applib's {@link ConfigurationService}, different from the internal
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridLoaderServiceDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridLoaderServiceDefault.java
index c374727..e122f4b 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridLoaderServiceDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridLoaderServiceDefault.java
@@ -27,6 +27,12 @@ import javax.annotation.PostConstruct;
 import javax.xml.bind.JAXBContext;
 import javax.xml.bind.JAXBException;
 
+import com.google.common.collect.Maps;
+import com.google.common.io.Resources;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import org.apache.isis.applib.annotation.DomainService;
 import org.apache.isis.applib.annotation.NatureOfService;
 import org.apache.isis.applib.annotation.Programmatic;
@@ -38,11 +44,6 @@ import org.apache.isis.applib.services.message.MessageService;
 import org.apache.isis.commons.internal.base._NullSafe;
 import org.apache.isis.commons.internal.collections._Arrays;
 import org.apache.isis.core.metamodel.deployment.DeploymentCategoryProvider;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.google.common.collect.Maps;
-import com.google.common.io.Resources;
 
 @DomainService(
         nature = NatureOfService.DOMAIN,
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridServiceDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridServiceDefault.java
index 435ca38..b30542d 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridServiceDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridServiceDefault.java
@@ -19,7 +19,6 @@ package org.apache.isis.core.metamodel.services.grid;
 import java.util.List;
 
 import com.google.common.base.Joiner;
-import com.google.common.collect.Lists;
 
 import org.apache.isis.applib.annotation.DomainService;
 import org.apache.isis.applib.annotation.NatureOfService;
@@ -136,7 +135,7 @@ public class GridServiceDefault implements GridService {
      */
     @Programmatic
     public String tnsAndSchemaLocation(final Grid grid) {
-        final List<String> parts = Lists.newArrayList();
+        final List<String> parts = _Lists.newArrayList();
 
         parts.add(COMPONENT_TNS);
         parts.add(COMPONENT_SCHEMA_LOCATION);
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridSystemServiceAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridSystemServiceAbstract.java
index 6391fc7..2be6e0f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridSystemServiceAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/grid/GridSystemServiceAbstract.java
@@ -23,6 +23,11 @@ import java.util.Map;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.stream.Stream;
 
+import com.google.common.base.Strings;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import org.apache.isis.applib.annotation.ActionLayout;
 import org.apache.isis.applib.annotation.BookmarkPolicy;
 import org.apache.isis.applib.annotation.LabelPosition;
@@ -47,6 +52,7 @@ import org.apache.isis.applib.services.i18n.TranslationService;
 import org.apache.isis.applib.services.jaxb.JaxbService;
 import org.apache.isis.applib.services.message.MessageService;
 import org.apache.isis.commons.internal.base._Casts;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.deployment.DeploymentCategoryProvider;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
@@ -107,11 +113,6 @@ import org.apache.isis.core.metamodel.spec.feature.ObjectMember;
 import org.apache.isis.core.metamodel.spec.feature.OneToManyAssociation;
 import org.apache.isis.core.metamodel.spec.feature.OneToOneAssociation;
 import org.apache.isis.core.metamodel.specloader.SpecificationLoader;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import com.google.common.base.Strings;
-import com.google.common.collect.Lists;
 
 public abstract class GridSystemServiceAbstract<G extends org.apache.isis.applib.layout.grid.Grid> implements GridSystemService<G> {
 
@@ -392,9 +393,9 @@ public abstract class GridSystemServiceAbstract<G extends org.apache.isis.applib
      * Returns a 2-element tuple of [first-second, second-first]
      */
     protected static <T> Tuple<List<T>> surplusAndMissing(final Collection<T> first, final Collection<T> second){
-        final List<T> firstNotSecond = Lists.newArrayList(first);
+        final List<T> firstNotSecond = _Lists.newArrayList(first);
         firstNotSecond.removeAll(second);
-        final List<T> secondNotFirst = Lists.newArrayList(second);
+        final List<T> secondNotFirst = _Lists.newArrayList(second);
         secondNotFirst.removeAll(first);
         return Tuple.of(firstNotSecond, secondNotFirst);
     }
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/metamodel/DomainMemberDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/metamodel/DomainMemberDefault.java
index d22aea8..bcc6e70 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/metamodel/DomainMemberDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/metamodel/DomainMemberDefault.java
@@ -23,6 +23,10 @@ import java.util.Comparator;
 import java.util.List;
 import java.util.SortedSet;
 
+import com.google.common.base.Joiner;
+import com.google.common.base.Strings;
+import com.google.common.collect.Sets;
+
 import org.apache.isis.applib.services.metamodel.DomainMember;
 import org.apache.isis.core.commons.lang.StringExtensions;
 import org.apache.isis.core.metamodel.facetapi.Facet;
@@ -54,10 +58,6 @@ import org.apache.isis.core.metamodel.specloader.specimpl.ContributeeMember2;
 import org.apache.isis.core.metamodel.specloader.specimpl.MixedInMember;
 import org.apache.isis.core.metamodel.specloader.specimpl.MixedInMember2;
 
-import com.google.common.base.Joiner;
-import com.google.common.base.Strings;
-import com.google.common.collect.Sets;
-
 public class DomainMemberDefault implements DomainMember {
 
     private final ObjectSpecification spec;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/metamodel/MetaModelServiceDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/metamodel/MetaModelServiceDefault.java
index 10f1349..f5239f7 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/metamodel/MetaModelServiceDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/metamodel/MetaModelServiceDefault.java
@@ -24,8 +24,6 @@ import java.util.List;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-import com.google.common.collect.Lists;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -39,6 +37,7 @@ import org.apache.isis.applib.services.command.CommandDtoProcessor;
 import org.apache.isis.applib.services.grid.GridService;
 import org.apache.isis.applib.services.metamodel.DomainMember;
 import org.apache.isis.applib.services.metamodel.MetaModelService;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.JdoMetamodelUtil;
 import org.apache.isis.core.metamodel.facets.actions.command.CommandFacet;
 import org.apache.isis.core.metamodel.facets.object.objectspecid.ObjectSpecIdFacet;
@@ -112,7 +111,7 @@ public class MetaModelServiceDefault implements MetaModelService {
 
         final Collection<ObjectSpecification> specifications = specificationLookup.allSpecifications();
 
-        final List<DomainMember> rows = Lists.newArrayList();
+        final List<DomainMember> rows = _Lists.newArrayList();
         for (final ObjectSpecification spec : specifications) {
             if (exclude(spec)) {
                 continue;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/Generation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/Generation.java
index 7a93ed9..c14c811 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/Generation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/Generation.java
@@ -25,9 +25,6 @@ import java.util.List;
 import java.util.Set;
 import java.util.stream.Collectors;
 
-import javax.annotation.Nullable;
-
-import java.util.function.Function;
 import com.google.common.base.Joiner;
 import com.google.common.base.Strings;
 import com.google.common.collect.FluentIterable;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/Util.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/Util.java
index 9ab4db1..aab6ae7 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/Util.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/Util.java
@@ -21,6 +21,8 @@ package org.apache.isis.core.metamodel.services.swagger.internal;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
 
 import org.apache.isis.applib.services.swagger.SwaggerService;
 import org.apache.isis.commons.internal.base._Casts;
@@ -33,10 +35,6 @@ import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
 import org.apache.isis.core.metamodel.spec.feature.OneToManyAssociation;
 import org.apache.isis.core.metamodel.spec.feature.OneToOneAssociation;
 
-import java.util.function.Predicate;
-import java.util.stream.Collector;
-import java.util.stream.Collectors;
-
 import io.swagger.models.Response;
 
 public final class Util {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/ValuePropertyFactory.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/ValuePropertyFactory.java
index 26909f3..19e325f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/ValuePropertyFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/services/swagger/internal/ValuePropertyFactory.java
@@ -25,12 +25,8 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.UUID;
-import java.util.function.Function;
 import java.util.function.Supplier;
 
-import javax.annotation.Nullable;
-
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
 import org.joda.time.DateTime;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/CurrentHolder.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/CurrentHolder.java
index 5670791..747fed7 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/CurrentHolder.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/CurrentHolder.java
@@ -19,7 +19,6 @@
 
 package org.apache.isis.core.metamodel.spec.feature;
 
-import org.apache.isis.core.commons.authentication.AuthenticationSession;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectAction.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectAction.java
index f1bbb11..9ee7f01 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectAction.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectAction.java
@@ -27,7 +27,6 @@ import java.util.stream.Stream;
 import com.google.common.base.Objects;
 import com.google.common.base.Strings;
 import com.google.common.collect.FluentIterable;
-import com.google.common.collect.Lists;
 
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.ActionLayout;
@@ -38,6 +37,7 @@ import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.applib.value.Blob;
 import org.apache.isis.applib.value.Clob;
 import org.apache.isis.commons.internal.base._Strings;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.commons.internal.collections._Sets;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.Consent;
@@ -289,7 +289,7 @@ public interface ObjectAction extends ObjectMember {
         public static List<ObjectAction> findTopLevel(
                 final ObjectAdapter adapter,
                 final DeploymentCategory deploymentCategory) {
-            final List<ObjectAction> topLevelActions = Lists.newArrayList();
+            final List<ObjectAction> topLevelActions = _Lists.newArrayList();
 
             addTopLevelActions(adapter, ActionType.USER, topLevelActions);
             if(deploymentCategory.isPrototyping()) {
@@ -324,7 +324,7 @@ public interface ObjectAction extends ObjectMember {
         public static List<ObjectAction> findForAssociation(
                 final ObjectAdapter adapter,
                 final ObjectAssociation association, final DeploymentCategory deploymentCategory) {
-            final List<ObjectAction> associatedActions = Lists.newArrayList();
+            final List<ObjectAction> associatedActions = _Lists.newArrayList();
 
             addActions(adapter, ActionType.USER, association, associatedActions);
             if(deploymentCategory.isPrototyping()) {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectActionParameter.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectActionParameter.java
index 103ac37..c008ac0 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectActionParameter.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectActionParameter.java
@@ -19,6 +19,9 @@
 
 package org.apache.isis.core.metamodel.spec.feature;
 
+import java.util.function.Function;
+import java.util.function.Predicate;
+
 import javax.annotation.Nullable;
 
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
@@ -27,9 +30,6 @@ import org.apache.isis.core.metamodel.facets.all.named.NamedFacet;
 import org.apache.isis.core.metamodel.interactions.ActionArgValidityContext;
 import org.apache.isis.core.metamodel.spec.ObjectSpecification;
 
-import java.util.function.Function;
-import java.util.function.Predicate;
-
 /**
  * Analogous to {@link ObjectAssociation}.
  */
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectMember.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectMember.java
index dbf3570..32229f5 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectMember.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/ObjectMember.java
@@ -21,6 +21,9 @@ package org.apache.isis.core.metamodel.spec.feature;
 
 import java.util.Comparator;
 import java.util.Map;
+import java.util.function.Function;
+import java.util.function.Predicate;
+import java.util.stream.Stream;
 
 import javax.annotation.Nullable;
 
@@ -33,10 +36,6 @@ import org.apache.isis.core.metamodel.facets.all.hide.HiddenFacet;
 import org.apache.isis.core.metamodel.facets.members.order.MemberOrderFacet;
 import org.apache.isis.core.metamodel.layout.memberorderfacet.MemberOrderFacetComparator;
 
-import java.util.function.Function;
-import java.util.function.Predicate;
-import java.util.stream.Stream;
-
 /**
  * Provides reflective access to an action or a field on a domain object.
  */
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/OneToManyAssociation.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/OneToManyAssociation.java
index 7402500..5ac7afb 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/OneToManyAssociation.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/spec/feature/OneToManyAssociation.java
@@ -19,13 +19,9 @@
 
 package org.apache.isis.core.metamodel.spec.feature;
 
-import org.apache.isis.core.commons.authentication.AuthenticationSession;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.Consent;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
-import org.apache.isis.core.metamodel.interactions.AccessContext;
-import org.apache.isis.core.metamodel.interactions.InteractionContext;
-import org.apache.isis.core.metamodel.interactions.ValidityContext;
 
 public interface OneToManyAssociation extends ObjectAssociation, OneToManyFeature {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/InjectorMethodEvaluatorDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/InjectorMethodEvaluatorDefault.java
index 1f82c31..8c63543 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/InjectorMethodEvaluatorDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/InjectorMethodEvaluatorDefault.java
@@ -21,9 +21,12 @@ package org.apache.isis.core.metamodel.specloader;
 
 import java.lang.reflect.Method;
 import java.util.Map;
+
 import com.google.common.collect.Maps;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+
 import org.apache.isis.core.metamodel.spec.InjectorMethodEvaluator;
 
 public final class InjectorMethodEvaluatorDefault implements InjectorMethodEvaluator {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/ServiceInitializer.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/ServiceInitializer.java
index 1e17b45..e03edcf 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/ServiceInitializer.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/ServiceInitializer.java
@@ -19,11 +19,15 @@ package org.apache.isis.core.metamodel.specloader;
 import java.lang.reflect.Method;
 import java.util.List;
 import java.util.Map;
+
 import javax.annotation.PostConstruct;
 import javax.annotation.PreDestroy;
+
 import com.google.common.collect.Maps;
+
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
+
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.commons.lang.MethodExtensions;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/SpecificationLoader.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/SpecificationLoader.java
index c2a9cce..ad77810 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/SpecificationLoader.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/SpecificationLoader.java
@@ -22,7 +22,6 @@ import java.util.Map;
 import java.util.Set;
 import java.util.stream.Stream;
 
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
 import org.slf4j.Logger;
@@ -32,6 +31,7 @@ import org.apache.isis.applib.AppManifest;
 import org.apache.isis.applib.annotation.DomainService;
 import org.apache.isis.applib.annotation.NatureOfService;
 import org.apache.isis.applib.annotation.Programmatic;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.components.ApplicationScopedComponent;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.commons.ensure.Assert;
@@ -464,7 +464,7 @@ public class SpecificationLoader implements ApplicationScopedComponent {
      */
     @Programmatic
     public Collection<ObjectSpecification> allSpecifications() {
-        return Lists.newArrayList(allCachedSpecifications());
+        return _Lists.newArrayList(allCachedSpecifications());
     }
 
     private Collection<ObjectSpecification> allCachedSpecifications() {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/classsubstitutor/ClassSubstitutor.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/classsubstitutor/ClassSubstitutor.java
index a88422f..f87caff 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/classsubstitutor/ClassSubstitutor.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/classsubstitutor/ClassSubstitutor.java
@@ -21,11 +21,11 @@ package org.apache.isis.core.metamodel.specloader.classsubstitutor;
 
 import java.util.Set;
 
+import com.google.common.collect.Sets;
+
 import org.apache.isis.applib.annotation.Programmatic;
 import org.apache.isis.core.commons.lang.ClassUtil;
 
-import com.google.common.collect.Sets;
-
 /**
  * Provides capability to translate or ignore classes.
  */
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/facetprocessor/FacetProcessor.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/facetprocessor/FacetProcessor.java
index 068e701..8f5ef1f 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/facetprocessor/FacetProcessor.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/facetprocessor/FacetProcessor.java
@@ -25,9 +25,9 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.lang.ListExtensions;
 import org.apache.isis.core.metamodel.facetapi.FacetHolder;
 import org.apache.isis.core.metamodel.facetapi.FeatureType;
@@ -43,7 +43,6 @@ import org.apache.isis.core.metamodel.facets.MethodFilteringFacetFactory;
 import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactory;
 import org.apache.isis.core.metamodel.facets.MethodRemoverConstants;
 import org.apache.isis.core.metamodel.facets.PropertyOrCollectionIdentifyingFacetFactory;
-import org.apache.isis.core.metamodel.progmodel.ObjectSpecificationPostProcessor;
 import org.apache.isis.core.metamodel.progmodel.ProgrammingModel;
 import org.apache.isis.core.metamodel.services.ServicesInjector;
 import org.apache.isis.core.metamodel.services.ServicesInjectorAware;
@@ -62,7 +61,7 @@ public class FacetProcessor implements ServicesInjectorAware {
      * {@link FacetFactory Facet factories}, in order they were
      * {@link #registerFactory(FacetFactory) registered}.
      */
-    private final List<FacetFactory> factories = Lists.newArrayList();
+    private final List<FacetFactory> factories = _Lists.newArrayList();
 
     /**
      * All method prefixes to check in {@link #recognizes(Method)}.
@@ -388,7 +387,7 @@ public class FacetProcessor implements ServicesInjectorAware {
         if (cachedMethodPrefixes != null) {
             return;
         }
-        cachedMethodPrefixes = Lists.newArrayList();
+        cachedMethodPrefixes = _Lists.newArrayList();
         for (final FacetFactory facetFactory : factories) {
             if (facetFactory instanceof MethodPrefixBasedFacetFactory) {
                 final MethodPrefixBasedFacetFactory methodPrefixBasedFacetFactory = (MethodPrefixBasedFacetFactory) facetFactory;
@@ -401,7 +400,7 @@ public class FacetProcessor implements ServicesInjectorAware {
         if (cachedMethodFilteringFactories != null) {
             return;
         }
-        cachedMethodFilteringFactories = Lists.newArrayList();
+        cachedMethodFilteringFactories = _Lists.newArrayList();
         for (final FacetFactory factory : factories) {
             if (factory instanceof MethodFilteringFacetFactory) {
                 final MethodFilteringFacetFactory methodFilteringFacetFactory = (MethodFilteringFacetFactory) factory;
@@ -414,7 +413,7 @@ public class FacetProcessor implements ServicesInjectorAware {
         if (cachedContributeeMemberFacetFactories != null) {
             return;
         }
-        cachedContributeeMemberFacetFactories = Lists.newArrayList();
+        cachedContributeeMemberFacetFactories = _Lists.newArrayList();
         for (final FacetFactory factory : factories) {
             if (factory instanceof ContributeeMemberFacetFactory) {
                 final ContributeeMemberFacetFactory memberOrderingFacetFactory = (ContributeeMemberFacetFactory) factory;
@@ -427,7 +426,7 @@ public class FacetProcessor implements ServicesInjectorAware {
         if (cachedPropertyOrCollectionIdentifyingFactories != null) {
             return;
         }
-        cachedPropertyOrCollectionIdentifyingFactories = Lists.newArrayList();
+        cachedPropertyOrCollectionIdentifyingFactories = _Lists.newArrayList();
         for (FacetFactory factory : factories) {
             if (factory instanceof PropertyOrCollectionIdentifyingFacetFactory) {
                 final PropertyOrCollectionIdentifyingFacetFactory identifyingFacetFactory = (PropertyOrCollectionIdentifyingFacetFactory) factory;
@@ -439,7 +438,7 @@ public class FacetProcessor implements ServicesInjectorAware {
     private static <K, T> List<T> getList(final Map<K, List<T>> map, final K key) {
         List<T> list = map.get(key);
         if (list == null) {
-            list = Lists.newArrayList();
+            list = _Lists.newArrayList();
             map.put(key, list);
         }
         return list;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ContributeeMember.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ContributeeMember.java
index 823d0c6..e083898 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ContributeeMember.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ContributeeMember.java
@@ -17,6 +17,7 @@
 package org.apache.isis.core.metamodel.specloader.specimpl;
 
 import java.util.function.Predicate;
+
 import org.apache.isis.core.metamodel.spec.feature.Contributed;
 import org.apache.isis.core.metamodel.spec.feature.ObjectAction;
 import org.apache.isis.core.metamodel.spec.feature.ObjectMember;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/FacetedMethodsBuilder.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/FacetedMethodsBuilder.java
index 4d77fdf..65c0eb4 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/FacetedMethodsBuilder.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/FacetedMethodsBuilder.java
@@ -27,12 +27,11 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
-import com.google.common.collect.Lists;
-
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import org.apache.isis.applib.annotation.Action;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.exceptions.IsisException;
 import org.apache.isis.core.commons.lang.ListExtensions;
 import org.apache.isis.core.commons.lang.MethodUtil;
@@ -227,14 +226,14 @@ public class FacetedMethodsBuilder {
         final Set<Method> associationCandidateMethods = getFacetProcessor().findAssociationCandidateAccessors(methods, new HashSet<Method>());
 
         // Ensure all return types are known
-        final List<Class<?>> typesToLoad = Lists.newArrayList();
+        final List<Class<?>> typesToLoad = _Lists.newArrayList();
         for (final Method method : associationCandidateMethods) {
             specificationTraverser.traverseTypes(method, typesToLoad);
         }
         getSpecificationLoader().loadSpecifications(typesToLoad, introspectedClass);
 
         // now create FacetedMethods for collections and for properties
-        final List<FacetedMethod> associationFacetedMethods = Lists.newArrayList();
+        final List<FacetedMethod> associationFacetedMethods = _Lists.newArrayList();
 
         findAndRemoveCollectionAccessorsAndCreateCorrespondingFacetedMethods(associationFacetedMethods);
         findAndRemovePropertyAccessorsAndCreateCorrespondingFacetedMethods(associationFacetedMethods);
@@ -243,7 +242,7 @@ public class FacetedMethodsBuilder {
     }
 
     private void findAndRemoveCollectionAccessorsAndCreateCorrespondingFacetedMethods(final List<FacetedMethod> associationPeers) {
-        final List<Method> collectionAccessors = Lists.newArrayList();
+        final List<Method> collectionAccessors = _Lists.newArrayList();
         getFacetProcessor().findAndRemoveCollectionAccessors(methodRemover, collectionAccessors);
         createCollectionFacetedMethodsFromAccessors(collectionAccessors, associationPeers);
     }
@@ -253,7 +252,7 @@ public class FacetedMethodsBuilder {
      * this will pick up the remaining reference properties.
      */
     private void findAndRemovePropertyAccessorsAndCreateCorrespondingFacetedMethods(final List<FacetedMethod> fields) {
-        final List<Method> propertyAccessors = Lists.newArrayList();
+        final List<Method> propertyAccessors = _Lists.newArrayList();
         getFacetProcessor().findAndRemovePropertyAccessors(methodRemover, propertyAccessors);
 
         findAndRemovePrefixedNonVoidMethods(MethodScope.OBJECT, GET_PREFIX, Object.class, 0, propertyAccessors);
@@ -361,7 +360,7 @@ public class FacetedMethodsBuilder {
             LOG.debug("  looking for action methods");
         }
 
-        final List<FacetedMethod> actionFacetedMethods = Lists.newArrayList();
+        final List<FacetedMethod> actionFacetedMethods = _Lists.newArrayList();
 
         for (int i = 0; i < methods.size(); i++) {
             final Method method = methods.get(i);
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionContributee.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionContributee.java
index 62f4fbc..692c81d 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionContributee.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionContributee.java
@@ -20,10 +20,9 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.stream.Stream;
 
-import com.google.common.collect.Lists;
-
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.Where;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.Consent;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
@@ -117,7 +116,7 @@ public class ObjectActionContributee extends ObjectActionDefault implements Cont
         final List<ObjectActionParameter> serviceParameters = serviceAction.getParameters();
         final List<FacetedMethodParameter> paramPeers = getFacetedMethod().getParameters();
 
-        final List<ObjectActionParameter> contributeeParameters = Lists.newArrayList();
+        final List<ObjectActionParameter> contributeeParameters = _Lists.newArrayList();
         int contributeeParamNum = 0;
 
         for (int serviceParamNum = 0; serviceParamNum < serviceParameters.size(); serviceParamNum++ ) {
@@ -274,13 +273,13 @@ public class ObjectActionContributee extends ObjectActionDefault implements Cont
     // //////////////////////////////////////
 
     static <T> T[] addElementToArray(T[] array, final int n, final T element, final T[] type) {
-        List<T> list = Lists.newArrayList(Arrays.asList(array));
+        List<T> list = _Lists.newArrayList(Arrays.asList(array));
         list.add(n, element);
         return list.toArray(type);
     }
 
     static <T> T[] removeElementFromArray(T[] array, int n, T[] t) {
-        List<T> list = Lists.newArrayList(Arrays.asList(array));
+        List<T> list = _Lists.newArrayList(Arrays.asList(array));
         list.remove(n);
         return list.toArray(t);
     }
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionDefault.java
index 71e09bb..deb06b3 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionDefault.java
@@ -22,10 +22,9 @@ package org.apache.isis.core.metamodel.specloader.specimpl;
 import java.util.Collections;
 import java.util.List;
 import java.util.concurrent.Callable;
+import java.util.function.Predicate;
 
 import com.google.common.base.Objects;
-import java.util.function.Predicate;
-import com.google.common.collect.Lists;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -37,6 +36,7 @@ import org.apache.isis.applib.annotation.SemanticsOf;
 import org.apache.isis.applib.annotation.Where;
 import org.apache.isis.applib.services.command.Command;
 import org.apache.isis.commons.internal._Constants;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.exceptions.UnknownTypeException;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.Consent;
@@ -192,7 +192,7 @@ public class ObjectActionDefault extends ObjectMemberAbstract implements ObjectA
         final int parameterCount = getParameterCount();
         final List<FacetedMethodParameter> paramPeers = getFacetedMethod().getParameters();
 
-        final List<ObjectActionParameter> parameters = Lists.newArrayList();
+        final List<ObjectActionParameter> parameters = _Lists.newArrayList();
         for (int paramNum = 0; paramNum < parameterCount; paramNum++) {
             final FacetedMethodParameter paramPeer = paramPeers.get(paramNum);
 
@@ -212,7 +212,7 @@ public class ObjectActionDefault extends ObjectMemberAbstract implements ObjectA
 
     @Override
     public List<ObjectSpecification> getParameterTypes() {
-        final List<ObjectSpecification> parameterTypes = Lists.newArrayList();
+        final List<ObjectSpecification> parameterTypes = _Lists.newArrayList();
         final List<ObjectActionParameter> parameters = getParameters();
         for (final ObjectActionParameter parameter : parameters) {
             parameterTypes.add(parameter.getSpecification());
@@ -247,7 +247,7 @@ public class ObjectActionDefault extends ObjectMemberAbstract implements ObjectA
     @Override
     public List<ObjectActionParameter> getParameters(final Predicate<ObjectActionParameter> predicate) {
         final List<ObjectActionParameter> allParameters = getParameters();
-        final List<ObjectActionParameter> selectedParameters = Lists.newArrayList();
+        final List<ObjectActionParameter> selectedParameters = _Lists.newArrayList();
         for (int i = 0; i < allParameters.size(); i++) {
             if (predicate.test(allParameters.get(i))) {
                 selectedParameters.add(allParameters.get(i));
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionMixedIn.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionMixedIn.java
index 154da8d..f540560 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionMixedIn.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionMixedIn.java
@@ -19,10 +19,10 @@ package org.apache.isis.core.metamodel.specloader.specimpl;
 import java.util.List;
 
 import com.google.common.base.Strings;
-import com.google.common.collect.Lists;
 
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.Where;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
 import org.apache.isis.core.metamodel.consent.Consent;
 import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
@@ -134,7 +134,7 @@ public class ObjectActionMixedIn extends ObjectActionDefault implements MixedInM
         final List<ObjectActionParameter> mixinActionParameters = mixinAction.getParameters();
         final List<FacetedMethodParameter> paramPeers = getFacetedMethod().getParameters();
 
-        final List<ObjectActionParameter> mixedInParameters = Lists.newArrayList();
+        final List<ObjectActionParameter> mixedInParameters = _Lists.newArrayList();
 
         for(int paramNum = 0; paramNum < mixinActionParameters.size(); paramNum++) {
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionParameterAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionParameterAbstract.java
index 01055af..5cd5cae 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionParameterAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionParameterAbstract.java
@@ -20,15 +20,13 @@
 package org.apache.isis.core.metamodel.specloader.specimpl;
 
 import java.util.List;
-
 import java.util.function.Predicate;
 import java.util.stream.Stream;
 
-import com.google.common.collect.Lists;
-
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.query.Query;
 import org.apache.isis.applib.query.QueryFindAllInstances;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.lang.ClassExtensions;
 import org.apache.isis.core.commons.lang.ListExtensions;
 import org.apache.isis.core.commons.lang.StringExtensions;
@@ -295,7 +293,7 @@ public abstract class ObjectActionParameterAbstract implements ObjectActionParam
             final String searchArg,
             final InteractionInitiatedBy interactionInitiatedBy) {
 
-        final List<ObjectAdapter> adapters = Lists.newArrayList();
+        final List<ObjectAdapter> adapters = _Lists.newArrayList();
         final ActionParameterAutoCompleteFacet facet = getFacet(ActionParameterAutoCompleteFacet.class);
 
         if (facet != null) {
@@ -348,7 +346,7 @@ public abstract class ObjectActionParameterAbstract implements ObjectActionParam
             final ObjectAdapter target,
             final List<ObjectAdapter> args,
             final InteractionInitiatedBy interactionInitiatedBy) {
-        final List<ObjectAdapter> adapters = Lists.newArrayList();
+        final List<ObjectAdapter> adapters = _Lists.newArrayList();
         final ActionParameterChoicesFacet facet = getFacet(ActionParameterChoicesFacet.class);
 
         if (facet != null) {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectSpecificationAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectSpecificationAbstract.java
index 271f374..e2a32ca 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectSpecificationAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectSpecificationAbstract.java
@@ -30,7 +30,6 @@ import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
 import com.google.common.collect.Collections2;
-import com.google.common.collect.Lists;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -99,7 +98,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
     private final static Logger LOG = LoggerFactory.getLogger(ObjectSpecificationAbstract.class);
 
     private static class SubclassList {
-        private final List<ObjectSpecification> classes = Lists.newArrayList();
+        private final List<ObjectSpecification> classes = _Lists.newArrayList();
 
         public void addSubclass(final ObjectSpecification subclass) {
             if(classes.contains(subclass)) {
@@ -133,7 +132,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
     private static Map<ActionType, List<ObjectAction>> createObjectActionsByType() {
         final Map<ActionType, List<ObjectAction>> map = _Maps.newHashMap();
         for (final ActionType type : ActionType.values()) {
-            map.put(type, Lists.<ObjectAction>newArrayList());
+            map.put(type, _Lists.<ObjectAction>newArrayList());
         }
         return map;
     }
@@ -698,7 +697,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
 
     protected List<ObjectAssociation> sortAssociations(final List<ObjectAssociation> associations) {
         final DeweyOrderSet orderSet = DeweyOrderSet.createOrderSet(associations);
-        final List<ObjectAssociation> orderedAssociations = Lists.newArrayList();
+        final List<ObjectAssociation> orderedAssociations = _Lists.newArrayList();
         sortAssociations(orderSet, orderedAssociations);
         return orderedAssociations;
     }
@@ -721,7 +720,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
 
     protected static List<ObjectAction> sortActions(final List<ObjectAction> actions) {
         final DeweyOrderSet orderSet = DeweyOrderSet.createOrderSet(actions);
-        final List<ObjectAction> orderedActions = Lists.newArrayList();
+        final List<ObjectAction> orderedActions = _Lists.newArrayList();
         sortActions(orderSet, orderedActions);
         return orderedActions;
     }
@@ -734,7 +733,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
             }
             else if (element instanceof DeweyOrderSet) {
                 final DeweyOrderSet set = ((DeweyOrderSet) element);
-                final List<ObjectAction> actions = Lists.newArrayList();
+                final List<ObjectAction> actions = _Lists.newArrayList();
                 sortActions(set, actions);
                 actionsToAppendTo.addAll(actions);
             } else {
@@ -756,7 +755,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
             return Collections.emptyList();
         }
 
-        final List<ObjectAssociation> contributeeAssociations = Lists.newArrayList();
+        final List<ObjectAssociation> contributeeAssociations = _Lists.newArrayList();
         for (final Object servicePojo : getServicePojos()) {
             addContributeeAssociationsIfAny(servicePojo, contributeeAssociations);
         }
@@ -852,7 +851,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
             return Collections.emptyList();
         }
 
-        final List<ObjectAssociation> mixedInAssociations = Lists.newArrayList();
+        final List<ObjectAssociation> mixedInAssociations = _Lists.newArrayList();
 
         for (final Class<?> mixinType : mixinTypes) {
             addMixedInAssociationsIfAny(mixinType, mixedInAssociations);
@@ -942,7 +941,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
         if (isService() || isValue()) {
             return Collections.emptyList();
         }
-        final List<ObjectAction> contributeeActions = Lists.newArrayList();
+        final List<ObjectAction> contributeeActions = _Lists.newArrayList();
 
         for (final Object servicePojo : getServicePojos()) {
             addContributeeActionsIfAny(servicePojo, contributeeActions);
@@ -1034,7 +1033,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
             return Collections.emptyList();
         }
 
-        final List<ObjectAction> mixedInActions = Lists.newArrayList();
+        final List<ObjectAction> mixedInActions = _Lists.newArrayList();
 
         for (final Class<?> mixinType : mixinTypes) {
             addMixedInActionsIfAny(mixinType, mixedInActions);
@@ -1218,7 +1217,7 @@ public abstract class ObjectSpecificationAbstract extends FacetHolderImpl implem
         // there must be a session available
         if(contributed.isIncluded() && !contributeeAndMixedInAssociationsAdded) {
             synchronized (this.associations) {
-                List<ObjectAssociation> associations = Lists.newArrayList(this.associations);
+                List<ObjectAssociation> associations = _Lists.newArrayList(this.associations);
                 associations.addAll(createContributeeAssociations());
                 associations.addAll(createMixedInAssociations());
                 sortAndUpdateAssociations(associations);
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/dflt/ObjectSpecificationDefault.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/dflt/ObjectSpecificationDefault.java
index 0c78752..7defaf5 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/dflt/ObjectSpecificationDefault.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/specimpl/dflt/ObjectSpecificationDefault.java
@@ -25,7 +25,6 @@ import java.util.List;
 import java.util.Map;
 import java.util.stream.Stream;
 
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
 import org.slf4j.Logger;
@@ -33,6 +32,7 @@ import org.slf4j.LoggerFactory;
 
 import org.apache.isis.applib.Identifier;
 import org.apache.isis.applib.annotation.NatureOfService;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.lang.StringExtensions;
 import org.apache.isis.core.commons.util.ToString;
 import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
@@ -146,7 +146,7 @@ public class ObjectSpecificationDefault extends ObjectSpecificationAbstract impl
         // making that refactoring.
         //
         final Class<?>[] interfaceTypes = getCorrespondingClass().getInterfaces();
-        final List<ObjectSpecification> interfaceSpecList = Lists.newArrayList();
+        final List<ObjectSpecification> interfaceSpecList = _Lists.newArrayList();
         for (final Class<?> interfaceType : interfaceTypes) {
             final Class<?> substitutedInterfaceType = classSubstitutor.getClass(interfaceType);
             if (substitutedInterfaceType != null) {
@@ -203,7 +203,7 @@ public class ObjectSpecificationDefault extends ObjectSpecificationAbstract impl
     // -- create associations and actions
     private List<ObjectAssociation> createAssociations() {
         final List<FacetedMethod> associationFacetedMethods = facetedMethodsBuilder.getAssociationFacetedMethods();
-        final List<ObjectAssociation> associations = Lists.newArrayList();
+        final List<ObjectAssociation> associations = _Lists.newArrayList();
         for (FacetedMethod facetedMethod : associationFacetedMethods) {
             final ObjectAssociation association = createAssociation(facetedMethod);
             if(association != null) {
@@ -226,7 +226,7 @@ public class ObjectSpecificationDefault extends ObjectSpecificationAbstract impl
 
     private List<ObjectAction> createActions() {
         final List<FacetedMethod> actionFacetedMethods = facetedMethodsBuilder.getActionFacetedMethods();
-        final List<ObjectAction> actions = Lists.newArrayList();
+        final List<ObjectAction> actions = _Lists.newArrayList();
         for (FacetedMethod facetedMethod : actionFacetedMethods) {
             final ObjectAction action = createAction(facetedMethod);
             if(action != null) {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorComposite.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorComposite.java
index cced609..23ee967 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorComposite.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorComposite.java
@@ -21,13 +21,12 @@ package org.apache.isis.core.metamodel.specloader.validator;
 
 import java.util.List;
 
-import com.google.common.collect.Lists;
-
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.specloader.SpecificationLoader;
 
 public class MetaModelValidatorComposite extends MetaModelValidatorAbstract {
 
-    private final List<MetaModelValidator> validators = Lists.newArrayList();
+    private final List<MetaModelValidator> validators = _Lists.newArrayList();
 
 
     public MetaModelValidatorComposite add(final MetaModelValidator validator) {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorToCheckModuleExtent.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorToCheckModuleExtent.java
index 962412b..8712cf7 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorToCheckModuleExtent.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorToCheckModuleExtent.java
@@ -18,25 +18,20 @@
  */
 package org.apache.isis.core.metamodel.specloader.validator;
 
-import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-
-import java.util.function.Function;
 import java.util.stream.Collectors;
 
 import com.google.common.base.Joiner;
-import com.google.common.collect.FluentIterable;
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
 import org.apache.isis.applib.AppManifest;
 import org.apache.isis.applib.AppManifest2;
 import org.apache.isis.applib.Module;
 import org.apache.isis.applib.services.metamodel.MetaModelService;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.spec.ObjectSpecification;
 
 public class MetaModelValidatorToCheckModuleExtent extends MetaModelValidatorComposite {
@@ -93,7 +88,7 @@ public class MetaModelValidatorToCheckModuleExtent extends MetaModelValidatorCom
                 } else {
                     List<String> classNames = domainObjectClassNamesByPackage.get(packageName);
                     if (classNames == null) {
-                        classNames = Lists.newArrayList();
+                        classNames = _Lists.newArrayList();
                         domainObjectClassNamesByPackage.put(packageName, classNames);
                     }
                     classNames.add(objSpec.getFullIdentifier());
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorToCheckObjectSpecIdsUnique.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorToCheckObjectSpecIdsUnique.java
index 86ac9bd..1f4d903 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorToCheckObjectSpecIdsUnique.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorToCheckObjectSpecIdsUnique.java
@@ -23,9 +23,9 @@ import java.util.Map;
 
 import com.google.common.base.Joiner;
 import com.google.common.collect.FluentIterable;
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.spec.ObjectSpecId;
 import org.apache.isis.core.metamodel.spec.ObjectSpecification;
 
@@ -60,7 +60,7 @@ public class MetaModelValidatorToCheckObjectSpecIdsUnique extends MetaModelValid
                 ObjectSpecId specId = objSpec.getSpecId();
                 List<ObjectSpecification> objectSpecifications = specsById.get(specId);
                 if(objectSpecifications == null) {
-                    objectSpecifications = Lists.newArrayList();
+                    objectSpecifications = _Lists.newArrayList();
                     specsById.put(specId, objectSpecifications);
                 }
                 objectSpecifications.add(objSpec);
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorVisiting.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorVisiting.java
index 0ce0808..78f40db 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorVisiting.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/MetaModelValidatorVisiting.java
@@ -22,8 +22,7 @@ package org.apache.isis.core.metamodel.specloader.validator;
 import java.util.Collection;
 import java.util.List;
 
-import com.google.common.collect.Lists;
-
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.spec.ObjectSpecification;
 
 public class MetaModelValidatorVisiting extends MetaModelValidatorAbstract {
@@ -53,7 +52,7 @@ public class MetaModelValidatorVisiting extends MetaModelValidatorAbstract {
 
     private void validateAll(final ValidationFailures validationFailures) {
 
-        final List<ObjectSpecification> specsValidated = Lists.newArrayList();
+        final List<ObjectSpecification> specsValidated = _Lists.newArrayList();
 
         while(validateSpecs(specsValidated, validationFailures)) {
             // validate in a loop, because the act of validating might cause additional specs to be uncovered
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/ValidationFailures.java b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/ValidationFailures.java
index 05960e5..1503d6a 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/ValidationFailures.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/metamodel/specloader/validator/ValidationFailures.java
@@ -22,6 +22,7 @@ import java.util.Collections;
 import java.util.Iterator;
 import java.util.Set;
 import java.util.SortedSet;
+
 import com.google.common.collect.Sets;
 
 public final class ValidationFailures implements Iterable<String> {
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/runtime/authentication/AuthenticationRequestAbstract.java b/core/metamodel/src/main/java/org/apache/isis/core/runtime/authentication/AuthenticationRequestAbstract.java
index 729dae7..7cca63d 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/runtime/authentication/AuthenticationRequestAbstract.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/runtime/authentication/AuthenticationRequestAbstract.java
@@ -22,12 +22,12 @@ package org.apache.isis.core.runtime.authentication;
 import java.util.Collections;
 import java.util.List;
 
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 public abstract class AuthenticationRequestAbstract implements AuthenticationRequest {
 
     private final String name;
-    private final List<String> roles = Lists.newArrayList();
+    private final List<String> roles = _Lists.newArrayList();
 
     public AuthenticationRequestAbstract(final String name) {
         this.name = name;
diff --git a/core/metamodel/src/main/java/org/apache/isis/core/runtime/authentication/standard/AuthenticationManagerStandard.java b/core/metamodel/src/main/java/org/apache/isis/core/runtime/authentication/standard/AuthenticationManagerStandard.java
index ec5f180..8a163b8 100644
--- a/core/metamodel/src/main/java/org/apache/isis/core/runtime/authentication/standard/AuthenticationManagerStandard.java
+++ b/core/metamodel/src/main/java/org/apache/isis/core/runtime/authentication/standard/AuthenticationManagerStandard.java
@@ -28,10 +28,10 @@ import java.util.Map;
 import java.util.stream.Collectors;
 
 import com.google.common.collect.Collections2;
-import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
 
 import org.apache.isis.applib.annotation.Programmatic;
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.commons.authentication.AuthenticationSession;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.commons.exceptions.IsisException;
@@ -45,7 +45,7 @@ public class AuthenticationManagerStandard implements AuthenticationManager {
 
     private final Map<String, String> userByValidationCode = Maps.newHashMap();
 
-    private final List<Authenticator> authenticators = Lists.newArrayList();
+    private final List<Authenticator> authenticators = _Lists.newArrayList();
 
     private RandomCodeGenerator randomCodeGenerator;
     private final IsisConfiguration configuration;
diff --git a/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/facets/object/discriminator/JdoDiscriminatorAnnotationFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/facets/object/discriminator/JdoDiscriminatorAnnotationFacetFactory.java
index 84ca945..ab6734c 100644
--- a/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/facets/object/discriminator/JdoDiscriminatorAnnotationFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/facets/object/discriminator/JdoDiscriminatorAnnotationFacetFactory.java
@@ -20,6 +20,7 @@
 package org.apache.isis.objectstore.jdo.metamodel.facets.object.discriminator;
 
 import javax.jdo.annotations.Discriminator;
+
 import com.google.common.base.Strings;
 
 import org.apache.isis.core.metamodel.JdoMetamodelUtil;
diff --git a/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/facets/prop/column/BigDecimalDerivedFromJdoColumnAnnotationFacetFactory.java b/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/facets/prop/column/BigDecimalDerivedFromJdoColumnAnnotationFacetFactory.java
index 143a699..dcedf5c 100644
--- a/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/facets/prop/column/BigDecimalDerivedFromJdoColumnAnnotationFacetFactory.java
+++ b/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/facets/prop/column/BigDecimalDerivedFromJdoColumnAnnotationFacetFactory.java
@@ -33,15 +33,15 @@ import org.apache.isis.core.metamodel.facets.Annotations;
 import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
 import org.apache.isis.core.metamodel.facets.FacetedMethod;
 import org.apache.isis.core.metamodel.facets.properties.bigdecimal.javaxvaldigits.BigDecimalFacetOnPropertyFromJavaxValidationDigitsAnnotation;
+import org.apache.isis.core.metamodel.facets.value.bigdecimal.BigDecimalValueFacet;
+import org.apache.isis.core.metamodel.facets.value.bigdecimal.BigDecimalValueSemanticsProvider;
 import org.apache.isis.core.metamodel.spec.ObjectSpecification;
 import org.apache.isis.core.metamodel.spec.feature.Contributed;
 import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
 import org.apache.isis.core.metamodel.specloader.validator.MetaModelValidatorComposite;
 import org.apache.isis.core.metamodel.specloader.validator.MetaModelValidatorVisiting;
-import org.apache.isis.core.metamodel.specloader.validator.ValidationFailures;
 import org.apache.isis.core.metamodel.specloader.validator.MetaModelValidatorVisiting.Visitor;
-import org.apache.isis.core.metamodel.facets.value.bigdecimal.BigDecimalValueFacet;
-import org.apache.isis.core.metamodel.facets.value.bigdecimal.BigDecimalValueSemanticsProvider;
+import org.apache.isis.core.metamodel.specloader.validator.ValidationFailures;
 import org.apache.isis.objectstore.jdo.metamodel.facets.object.persistencecapable.JdoPersistenceCapableFacet;
 import org.apache.isis.objectstore.jdo.metamodel.facets.prop.notpersistent.JdoNotPersistentFacet;
 
diff --git a/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/util/JdoPrimaryKeyPropertyPredicate.java b/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/util/JdoPrimaryKeyPropertyPredicate.java
index a57c155..37e0c70 100644
--- a/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/util/JdoPrimaryKeyPropertyPredicate.java
+++ b/core/metamodel/src/main/java/org/apache/isis/objectstore/jdo/metamodel/util/JdoPrimaryKeyPropertyPredicate.java
@@ -19,9 +19,10 @@
 package org.apache.isis.objectstore.jdo.metamodel.util;
 
 
+import java.util.function.Predicate;
+
 import javax.jdo.annotations.PrimaryKey;
 
-import java.util.function.Predicate;
 import org.apache.isis.core.metamodel.facets.propcoll.accessor.PropertyOrCollectionAccessorFacet;
 import org.apache.isis.core.metamodel.facets.properties.update.modify.PropertySetterFacet;
 import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
diff --git a/core/metamodel/src/main/java/org/apache/isis/progmodels/dflt/ProgrammingModelFacetsJava5.java b/core/metamodel/src/main/java/org/apache/isis/progmodels/dflt/ProgrammingModelFacetsJava5.java
index 5254cbe..9f53194 100644
--- a/core/metamodel/src/main/java/org/apache/isis/progmodels/dflt/ProgrammingModelFacetsJava5.java
+++ b/core/metamodel/src/main/java/org/apache/isis/progmodels/dflt/ProgrammingModelFacetsJava5.java
@@ -20,8 +20,7 @@ package org.apache.isis.progmodels.dflt;
 import java.util.List;
 import java.util.Set;
 
-import com.google.common.collect.Lists;
-
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.commons.internal.context._Plugin;
 import org.apache.isis.core.commons.config.IsisConfiguration;
 import org.apache.isis.core.metamodel.facets.actions.action.ActionAnnotationFacetFactory;
@@ -419,9 +418,8 @@ public final class ProgrammingModelFacetsJava5 extends ProgrammingModelAbstract
 
     @Override
     public List<ObjectSpecificationPostProcessor> getPostProcessors() {
-        return Lists.<ObjectSpecificationPostProcessor>newArrayList(
-                new ActionCollectionParameterDefaultsAndChoicesPostProcessor()
-                );
+        return _Lists.singleton(
+                new ActionCollectionParameterDefaultsAndChoicesPostProcessor() );
     }
 
     // -- HELPER
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/commons/lang/ListUtilsTest_adjust.java b/core/metamodel/src/test/java/org/apache/isis/core/commons/lang/ListUtilsTest_adjust.java
index 8342792..5b6e05a 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/commons/lang/ListUtilsTest_adjust.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/commons/lang/ListUtilsTest_adjust.java
@@ -24,14 +24,14 @@ import java.util.List;
 
 import org.junit.Test;
 
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 public class ListUtilsTest_adjust {
     
     
     @Test
     public void sameLength() throws Exception {
-        final List<Integer> list = Lists.newArrayList(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
+        final List<Integer> list = _Lists.of(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
         ListExtensions.adjust(list, 3);
         
         assertThat(list.size(), is(3));
@@ -42,7 +42,7 @@ public class ListUtilsTest_adjust {
     
     @Test
     public void ifLonger() throws Exception {
-        final List<Integer> list = Lists.newArrayList(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
+        final List<Integer> list = _Lists.of(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
         ListExtensions.adjust(list, 4);
         
         assertThat(list.size(), is(4));
@@ -54,7 +54,7 @@ public class ListUtilsTest_adjust {
     
     @Test
     public void ifShorter() throws Exception {
-        final List<Integer> list = Lists.newArrayList(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
+        final List<Integer> list = _Lists.of(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
         ListExtensions.adjust(list, 2);
         
         assertThat(list.size(), is(2));
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/commons/lang/ListUtilsTest_insert.java b/core/metamodel/src/test/java/org/apache/isis/core/commons/lang/ListUtilsTest_insert.java
index 4f5f105..a1d899f 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/commons/lang/ListUtilsTest_insert.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/commons/lang/ListUtilsTest_insert.java
@@ -22,7 +22,7 @@ import static org.junit.Assert.assertThat;
 
 import java.util.List;
 
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 import org.junit.Test;
 
@@ -30,7 +30,7 @@ public class ListUtilsTest_insert {
     
     @Test
     public void insert_whenInsertionPointAtBeginning() throws Exception {
-        final List<Integer> list = Lists.newArrayList(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
+        final List<Integer> list = _Lists.of(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
         ListExtensions.insert(list, 0, Integer.valueOf(10));
         
         assertThat(list.size(), is(4));
@@ -42,7 +42,7 @@ public class ListUtilsTest_insert {
     
     @Test
     public void insert_whenInsertionPointInMiddle() throws Exception {
-        final List<Integer> list = Lists.newArrayList(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
+        final List<Integer> list = _Lists.of(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
         ListExtensions.insert(list, 1, Integer.valueOf(10));
         
         assertThat(list.size(), is(4));
@@ -54,7 +54,7 @@ public class ListUtilsTest_insert {
 
     @Test
     public void insert_whenInsertionPointAtEnd() throws Exception {
-        final List<Integer> list = Lists.newArrayList(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
+        final List<Integer> list = _Lists.of(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
         ListExtensions.insert(list, 3, Integer.valueOf(10));
         
         assertThat(list.size(), is(4));
@@ -66,7 +66,7 @@ public class ListUtilsTest_insert {
     
     @Test
     public void insert_whenInsertionPointBeyondEnd() throws Exception {
-        final List<Integer> list = Lists.newArrayList(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
+        final List<Integer> list = _Lists.of(Integer.valueOf(0), Integer.MAX_VALUE, Integer.MIN_VALUE);
         ListExtensions.insert(list, 4, Integer.valueOf(10));
         
         assertThat(list.size(), is(5));
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/facets/AbstractFacetFactoryTest.java b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/facets/AbstractFacetFactoryTest.java
index 0e15985..0263bbf 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/facets/AbstractFacetFactoryTest.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/facets/AbstractFacetFactoryTest.java
@@ -22,7 +22,7 @@ package org.apache.isis.core.metamodel.facets;
 import java.lang.reflect.Method;
 import java.util.List;
 
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 import org.jmock.Expectations;
 import org.junit.Rule;
@@ -121,7 +121,7 @@ public abstract class AbstractFacetFactoryTest extends TestCase {
 
         mockSpecificationLoader = context.mock(SpecificationLoader.class);
 
-        stubServicesInjector = new ServicesInjector(Lists.newArrayList(
+        stubServicesInjector = new ServicesInjector(_Lists.of(
                 stubConfiguration,
                 mockAuthenticationSessionProvider,
                 mockSpecificationLoader,
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/facets/CollectionUtilsTest.java b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/facets/CollectionUtilsTest.java
index c1f32c8..83c5bfd 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/facets/CollectionUtilsTest.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/facets/CollectionUtilsTest.java
@@ -34,7 +34,7 @@ import java.util.TreeSet;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.concurrent.CopyOnWriteArraySet;
 
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 import org.junit.Before;
 import org.junit.Rule;
@@ -61,7 +61,7 @@ public class CollectionUtilsTest {
     @Test
     public void whenLinkedList() throws Exception {
 
-        List<Class<?>> collectionTypes = Lists.<Class<?>>newArrayList(
+        List<Class<?>> collectionTypes = _Lists.<Class<?>>of(
                 LinkedList.class,
                 ArrayList.class,
                 CopyOnWriteArrayList.class,
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/feature/ObjectAssociationPredicatesTest_visibleWhere.java b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/feature/ObjectAssociationPredicatesTest_visibleWhere.java
index 4352f14..5bada7f 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/feature/ObjectAssociationPredicatesTest_visibleWhere.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/feature/ObjectAssociationPredicatesTest_visibleWhere.java
@@ -18,15 +18,15 @@
  */
 package org.apache.isis.core.metamodel.feature;
 
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertThat;
+
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.List;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
 
-import com.google.common.collect.Lists;
-
-import org.hamcrest.Description;
-import org.hamcrest.Matcher;
-import org.hamcrest.TypeSafeMatcher;
 import org.jmock.Expectations;
 import org.jmock.auto.Mock;
 import org.junit.Before;
@@ -37,9 +37,7 @@ import org.junit.runners.Parameterized;
 import org.junit.runners.Parameterized.Parameters;
 
 import org.apache.isis.applib.annotation.Where;
-import java.util.function.Predicate;
-import java.util.stream.Collectors;
-
+import org.apache.isis.commons.internal.collections._Lists;
 import org.apache.isis.core.metamodel.facetapi.Facet;
 import org.apache.isis.core.metamodel.facets.WhereValueFacet;
 import org.apache.isis.core.metamodel.facets.all.hide.HiddenFacet;
@@ -47,9 +45,6 @@ import org.apache.isis.core.metamodel.spec.feature.ObjectAssociation;
 import org.apache.isis.core.unittestsupport.jmocking.JUnitRuleMockery2;
 import org.apache.isis.core.unittestsupport.jmocking.JUnitRuleMockery2.Mode;
 
-import static org.hamcrest.CoreMatchers.is;
-import static org.junit.Assert.assertThat;
-
 @RunWith(Parameterized.class)
 public class ObjectAssociationPredicatesTest_visibleWhere {
 
@@ -110,23 +105,23 @@ public class ObjectAssociationPredicatesTest_visibleWhere {
             will(returnValue(where));
 
             allowing(mockObjectAssociation).streamFacets();
-            will(returnValue(Lists.newArrayList(mockHiddenFacet).stream()));
+            will(returnValue(_Lists.of(mockHiddenFacet).stream()));
         }});
     }
 
-    private Matcher<Class<? extends Facet>> subclassOf(final Class<?> cls) {
-        return new TypeSafeMatcher<Class<? extends Facet>>() {
-            @Override
-            protected boolean matchesSafely(final Class<? extends Facet> item) {
-                return cls.isAssignableFrom(cls);
-            }
-
-            @Override
-            public void describeTo(final Description description) {
-                description.appendText("subclass of " + cls.getName());
-            }
-        };
-    }
+//    private Matcher<Class<? extends Facet>> subclassOf(final Class<?> cls) {
+//        return new TypeSafeMatcher<Class<? extends Facet>>() {
+//            @Override
+//            protected boolean matchesSafely(final Class<? extends Facet> item) {
+//                return cls.isAssignableFrom(cls);
+//            }
+//
+//            @Override
+//            public void describeTo(final Description description) {
+//                description.appendText("subclass of " + cls.getName());
+//            }
+//        };
+//    }
 
     @Test
     public void test() {
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/ServicesInjectorDefaultTest_validateServices.java b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/ServicesInjectorDefaultTest_validateServices.java
index 5834639..f8b4f69 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/ServicesInjectorDefaultTest_validateServices.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/ServicesInjectorDefaultTest_validateServices.java
@@ -21,7 +21,7 @@ package org.apache.isis.core.metamodel.services;
 
 import java.util.List;
 
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -51,7 +51,7 @@ public class ServicesInjectorDefaultTest_validateServices {
 
         @Before
         public void setUp() throws Exception {
-            serviceList = Lists.newArrayList();
+            serviceList = _Lists.newArrayList();
             stubConfiguration = new IsisConfigurationDefault();
         }
 
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/appfeat/ApplicationFeatureRepositoryDefaultTest.java b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/appfeat/ApplicationFeatureRepositoryDefaultTest.java
index a3b1d23..80527d6 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/appfeat/ApplicationFeatureRepositoryDefaultTest.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/appfeat/ApplicationFeatureRepositoryDefaultTest.java
@@ -56,7 +56,7 @@ import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 public class ApplicationFeatureRepositoryDefaultTest {
 
@@ -106,9 +106,9 @@ public class ApplicationFeatureRepositoryDefaultTest {
         @Test
         public void happyCase() throws Exception {
 
-            final List<ObjectAssociation> properties = Lists.<ObjectAssociation>newArrayList(mockProp);
-            final List<ObjectAssociation> collections = Lists.<ObjectAssociation>newArrayList(mockColl);
-            final List<ObjectAction> actions = Lists.newArrayList(mockAct, mockActThatIsHidden);
+            final List<ObjectAssociation> properties = _Lists.<ObjectAssociation>of(mockProp);
+            final List<ObjectAssociation> collections = _Lists.<ObjectAssociation>of(mockColl);
+            final List<ObjectAction> actions = _Lists.of(mockAct, mockActThatIsHidden);
 
             context.checking(new Expectations() {{
                 allowing(mockSpec).isAbstract();
@@ -174,7 +174,7 @@ public class ApplicationFeatureRepositoryDefaultTest {
                 will(returnValue(SemanticsOf.SAFE));
 
                 allowing(mockServiceRegistry).getRegisteredServices();
-                will(returnValue(Lists.newArrayList()));
+                will(returnValue(_Lists.newArrayList()));
             }});
 
             // then
@@ -266,10 +266,10 @@ public class ApplicationFeatureRepositoryDefaultTest {
 
             context.checking(new Expectations() {{
                 allowing(mockServiceRegistry).getRegisteredServices();
-                will(returnValue(Lists.newArrayList()));
+                will(returnValue(_Lists.newArrayList()));
 
                 allowing(mockSpecificationLoader).allSpecifications();
-                will(returnValue(Lists.newArrayList()));
+                will(returnValue(_Lists.newArrayList()));
             }});
 
         }
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/grid/BS3GridTest.java b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/grid/BS3GridTest.java
index 4cc59e3..e0387b0 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/grid/BS3GridTest.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/services/grid/BS3GridTest.java
@@ -24,7 +24,7 @@ import java.util.Map;
 import javax.xml.bind.Marshaller;
 
 import com.google.common.collect.ImmutableMap;
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 import org.junit.After;
 import org.junit.Before;
@@ -85,7 +85,7 @@ public class BS3GridTest {
 
         final ActionLayoutData deleteActionLayoutData = new ActionLayoutData();
         deleteActionLayoutData.setId("delete");
-        headerCol.setActions(Lists.<ActionLayoutData>newArrayList());
+        headerCol.setActions(_Lists.<ActionLayoutData>newArrayList());
         headerCol.getActions().add(deleteActionLayoutData);
 
         // content
@@ -112,7 +112,7 @@ public class BS3GridTest {
 
         // containing a fieldset
         final FieldSet leftPropGroup = new FieldSet("General");
-        tabLeftCol.setFieldSets(Lists.<FieldSet>newArrayList());
+        tabLeftCol.setFieldSets(_Lists.<FieldSet>newArrayList());
         tabLeftCol.getFieldSets().add(leftPropGroup);
         leftPropGroup.setName("General");
 
@@ -124,7 +124,7 @@ public class BS3GridTest {
         // and its associated action
         final ActionLayoutData updateNameActionLayoutData = new ActionLayoutData();
         updateNameActionLayoutData.setId("updateName");
-        namePropertyLayoutData.setActions(Lists.<ActionLayoutData>newArrayList());
+        namePropertyLayoutData.setActions(_Lists.<ActionLayoutData>newArrayList());
         namePropertyLayoutData.getActions().add(updateNameActionLayoutData);
 
         // and the tab also has a right col...
@@ -134,7 +134,7 @@ public class BS3GridTest {
 
         // containing a collection
         final CollectionLayoutData similarToColl = new CollectionLayoutData();
-        tabRightCol.setCollections(Lists.<CollectionLayoutData>newArrayList());
+        tabRightCol.setCollections(_Lists.<CollectionLayoutData>newArrayList());
         tabRightCol.getCollections().add(similarToColl);
         similarToColl.setId("similarTo");
 
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/ServiceInitializerTest.java b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/ServiceInitializerTest.java
index 0f99be8..09f10c1 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/ServiceInitializerTest.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/ServiceInitializerTest.java
@@ -18,19 +18,20 @@
  */
 package org.apache.isis.core.metamodel.specloader;
 
+import static org.apache.isis.commons.internal.base._NullSafe.stream;
 import static org.hamcrest.CoreMatchers.containsString;
 import static org.hamcrest.CoreMatchers.is;
 import static org.junit.Assert.assertThat;
 
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 import javax.annotation.PostConstruct;
 import javax.annotation.PreDestroy;
 
-import org.apache.isis.core.commons.config.IsisConfiguration;
-import org.apache.isis.core.unittestsupport.jmocking.JUnitRuleMockery2;
-import org.apache.isis.core.unittestsupport.jmocking.JUnitRuleMockery2.Mode;
+import com.google.common.collect.Maps;
+
 import org.jmock.Expectations;
 import org.jmock.auto.Mock;
 import org.junit.After;
@@ -39,8 +40,9 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.ExpectedException;
 
-import com.google.common.collect.Lists;
-import com.google.common.collect.Maps;
+import org.apache.isis.core.commons.config.IsisConfiguration;
+import org.apache.isis.core.unittestsupport.jmocking.JUnitRuleMockery2;
+import org.apache.isis.core.unittestsupport.jmocking.JUnitRuleMockery2.Mode;
 
 public class ServiceInitializerTest {
 
@@ -74,7 +76,8 @@ public class ServiceInitializerTest {
 
     
     private static List<Object> listOf(Object... elements) {
-        return Lists.newArrayList(elements);
+        return stream(elements)
+                .collect(Collectors.toList());
     }
 
     public static class DomainServiceWithPostConstruct {
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/SpecificationLoaderTestAbstract.java b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/SpecificationLoaderTestAbstract.java
index 2360cbe..d3efc67 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/SpecificationLoaderTestAbstract.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/SpecificationLoaderTestAbstract.java
@@ -19,7 +19,7 @@
 
 package org.apache.isis.core.metamodel.specloader;
 
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 import org.jmock.Expectations;
 import org.jmock.auto.Mock;
@@ -94,7 +94,7 @@ public abstract class SpecificationLoaderTestAbstract {
 
         stubServicesInjector =
                 new ServicesInjector(
-                    Lists.newArrayList(
+                    _Lists.of(
                         mockAuthenticationSessionProvider,
                         stubConfiguration,
                         mockDeploymentCategoryProvider,
diff --git a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionParameterAbstractTest_getId_and_getName.java b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionParameterAbstractTest_getId_and_getName.java
index 61c21eb..c9ba8cb 100644
--- a/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionParameterAbstractTest_getId_and_getName.java
+++ b/core/metamodel/src/test/java/org/apache/isis/core/metamodel/specloader/specimpl/ObjectActionParameterAbstractTest_getId_and_getName.java
@@ -20,7 +20,7 @@
 package org.apache.isis.core.metamodel.specloader.specimpl;
 
 import java.util.function.Predicate;
-import com.google.common.collect.Lists;
+import org.apache.isis.commons.internal.collections._Lists;
 
 import org.jmock.Expectations;
 import org.jmock.auto.Mock;
@@ -164,7 +164,7 @@ public class ObjectActionParameterAbstractTest_getId_and_getName {
                 will(returnValue(null));
 
                 oneOf(parentAction).getParameters(with(Expectations.<Predicate<ObjectActionParameter>>anything()));
-                will(returnValue(Lists.newArrayList(objectActionParameter)));
+                will(returnValue(_Lists.of(objectActionParameter)));
             }
         });
 
@@ -183,7 +183,7 @@ public class ObjectActionParameterAbstractTest_getId_and_getName {
                 will(returnValue(null));
 
                 oneOf(parentAction).getParameters(with(Expectations.<Predicate<ObjectActionParameter>>anything()));
-                will(returnValue(Lists.newArrayList(stubObjectActionParameterString, objectActionParameter, stubObjectActionParameterString2)));
+                will(returnValue(_Lists.of(stubObjectActionParameterString, objectActionParameter, stubObjectActionParameterString2)));
             }
         });
 
@@ -202,7 +202,7 @@ public class ObjectActionParameterAbstractTest_getId_and_getName {
                 will(returnValue(null));
 
                 oneOf(parentAction).getParameters(with(Expectations.<Predicate<ObjectActionParameter>>anything()));
-                will(returnValue(Lists.newArrayList(stubObjectActionParameterString, objectActionParameter, stubObjectActionParameterString2)));
+                will(returnValue(_Lists.of(stubObjectActionParameterString, objectActionParameter, stubObjectActionParameterString2)));
             }
         });