Oh, I understood it. It is autogenerated class from KConfigXT framework.
and the answer for other is grep -r KickerSettings * :)
the JJ is "Make the appletproxy access KickerSettings so that applets that go to use that can be run in it for testing purposes"
Where is KickerSettings class? I could not find them. And also, can you give me example of any applet which uses KickerSettings ?