Go back to previous page when error occurs

[DVD <dv...@newfoundmarket.com>]

Hello:

I have a specific goal of set a error handler so that when a page (whether bookmarkable or not)
throw exceptions during instantiation, it would go back to the previous page (if previous
page does not exist, such as accessed via a bookmark, then go to home page)
at least an error page would have a link to point to the previous page.
I have seen many discussions on how to use pagemap/accesstack/backbutton,etc. My need here
is specific and single purpose simplified (only for page creation exception handling and only needs to know
the previous page object).  I could not find an simple API for this.  any advice would be appreciated.

I wish I could use something  session.getLastCreatedPageObject()
where wicket would always have a ref in each session for the last page object it creates successfully,
regardless of bookmarkable or not.

Thank you in advance.