Rename the method to organizeRemoteValuesByMetadata

protected Map<String, Map<String, List<Object>>> organizeRemoteValuesByMetadata(Map<String, Map<String, Object>> remoteValues, Map<String, List<String>> mapping)

and move it to AbstractSynchronizableContentsCollection as a protected method.
This method reorganize the remote values based on the SCC mapping.

All implementation of SCC can call this protected method in their #getRemoteValues method (such as LDAPSynchronizableContentsCollection, AbstractApogeeSynchronizableContentsCollection, ...)

Why not move also #getMapping() method to SynchronizableContentsCollection API ?