Minor Description
The JavaDoc for the classes DataTable and DataGridView has a code/usage example that reference a class named UserProvider.
I wasn't able to find this class in the most recent wicket release (and also in none of the previous releases).
I found an implementation here:
https://cwiki.apache.org/confluence/display/WICKET/Simple+Sortable+DataTable+Example
But it is marked as belonging to the packet com.adamkoch.learning.wicket, which of course is not in any wicket release.
As a developer that searches for a minimal example of how to use the DataTable (or DataGridView) class I would prefer if the code example would actually compile.
This issue is similar to WICKET-2183, but there nobody complained about the missing UserProvider class, so maybe it was still present back then (in 2009).