@abc.abstractmethod<EOL><INDENT>def supports_relationship_family_assignment(self):<DEDENT>
return<EOL>
Tests if a relationship cataloging service is supported.

        A relationship cataloging service maps relationships to
        families.

        :return: ``true`` if relationship families are supported, ``false`` otherwise
        :rtype: ``boolean``


        *compliance: mandatory -- This method must be implemented.*