API Revamp: Removed methods hasX and removeX from the role slots with multiplicity of one.
Refactored Framework internal code to comply with the latest generated API.
Removed methods 'getXCount', 'hasAnyX', 'hasX', 'getXSet' and 'getXIterator' from the role slots with multiplicity of *.
Modified the code generated for consistency checks to use the new generated API.
Renamed generated method 'getXpto' to 'getXptoSet'
Refactor: Changed invocations to 'getXpto' to comply with the new generated API.
Updated Tests to use the new Generated API.