@abc.abstractmethod<EOL><INDENT>def create_routine_loader_helper(self, routine_name, pystratum_old_metadata, rdbms_old_metadata):<DEDENT>
raise NotImplementedError()<EOL>
Creates a Routine Loader Helper object.

:param str routine_name: The name of the routine.
:param dict pystratum_old_metadata: The old metadata of the stored routine from PyStratum.
:param dict rdbms_old_metadata:  The old metadata of the stored routine from database instance.

:rtype: pystratum.RoutineLoaderHelper.RoutineLoaderHelper