WICKET-6324 optional for all callbacks
Project: http://git-wip-us.apache.org/repos/asf/wicket/repo
Commit: http://git-wip-us.apache.org/repos/asf/wicket/commit/5565210b
Tree: http://git-wip-us.apache.org/repos/asf/wicket/tree/5565210b
Diff: http://git-wip-us.apache.org/repos/asf/wicket/diff/55652
Repository: wicket
Updated Branches:
refs/heads/master d71d384a0 -> 1d8a9c780
WICKET-6324 optional for all callbacks
Project: http://git-wip-us.apache.org/repos/asf/wicket/repo
Commit: http://git-wip-us.apache.org/repos/asf/wicket/commit/1d8a9c78
Tree: http://git-wip-us.apache.org/repos/asf/w