@abc.abstractmethod<EOL><INDENT>def match_subject_id(self, subject_id, match):<DEDENT>
pass<EOL>
Matches an object with a relationship to the given subject.

        :param subject_id: a subject ``Id``
        :type subject_id: ``osid.id.Id``
        :param match: ``true`` for a positive match, ``false`` for a negative match
        :type match: ``boolean``
        :raise: ``NullArgument`` -- ``subject_id`` is ``null``

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