[commons-configuration] 02/03: Make private class static.

[gg...@apache.org]

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ggregory pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/commons-configuration.git

commit 16fa8099a886ea733f9fbc3560cef99205751917
Author: Gary Gregory <ga...@gmail.com>
AuthorDate: Sun May 15 14:31:56 2022 -0400

    Make private class static.
---
 .../java/org/apache/commons/configuration2/tree/ModelTransaction.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/org/apache/commons/configuration2/tree/ModelTransaction.java b/src/main/java/org/apache/commons/configuration2/tree/ModelTransaction.java
index b5328aea..e2e7f9f2 100644
--- a/src/main/java/org/apache/commons/configuration2/tree/ModelTransaction.java
+++ b/src/main/java/org/apache/commons/configuration2/tree/ModelTransaction.java
@@ -562,7 +562,7 @@ class ModelTransaction {
      * An abstract base class representing an operation to be performed on a node. Concrete subclasses implement specific
      * update operations.
      */
-    private abstract class Operation {
+    private abstract static class Operation {
         /**
          * Executes this operation on the provided target node returning the result.
          *