...
Therefore, you can override XML named classes using source from the WAR Overlay project, but the other classes that are imported into JASIG source files probably have to be edited and changed in their original JASIG project. If you have to make a change, identify the modified JASIG source in the ReleaseNotes, and if it is a bug change submit it to JASIG to be fixed in future releases.
After The Sandbox
Changed files must eventually be Committed to the SVN trunk.
Do not commit the generated "target" subdirectories to SVN. They contain temporary files that should not be saved.
Once you are ready to proceed to the next phase, run a Jenkins Trunk Build and do a DEV Install.