C2B adds also items of incorrect types to the typed collections.

To reproduce:

• go to /modules/cache/config/configurations and create new NodeData there
• wait for observation to kick in and reload the module

Result:
ClassCastException in CacheModule:110 when attempting to cast String into a CacheConfiguration.
since the addCacheConfiguration() method in the CacheModule provides C2B with the info that value in the map should be CacheConfiguration, it should not attempt to add String as a value (and succeed since generics are erased at runtime) but only instances of classes that can be cast to CacheConfiguration.