Condition Decides whether a web section or web item should be displayed  
ContextProvider Main purpose of this is to add additional context entries for the web fragment and make it available within the XML  
WebFragmentHelper Provides application specific methods to build/render web fragments  
WebInterfaceManager A simple manager to provide sections of the web interface through plugins. 


DefaultWebInterfaceManager Stores and manages flexible web interface sections available in the system. 
NoOpContextProvider A ContextProvider implementation that just passes the given context back.