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Wicket-Guice's InjectionFlagCachingGuiceComponentInjector is removed. The replacement is GuiceComponentInjector. The caching mechanism that InjectionFlagCachingGuiceComponentInjector provided is moved to org.apache.wicket.injection.Injector so that the caching is re-used for both Wicket-Spring and Wicket-Guice.
Wicket-Guice no more supports method injection. The same could be achieved with field injection. This way it is the same as Wicket-Spring and the involved code is highly reused between the IOC projects.
Visitors
Visitors have been cleaned up. Dependency on magic return values defined in Component#IVisitor have been replaced with a Component#IVisit object that allows the visitor to control the flow of the traversal.
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