@abc.abstractmethod<EOL><INDENT>def get_compositions_by_record_type(self, composition_record_type):<DEDENT>
return<EOL>
Gets a ``CompositionList`` containing the given composition record ``Type``.

        :param composition_record_type: a composition record type
        :type composition_record_type: ``osid.type.Type``
        :return: the returned ``Composition list``
        :rtype: ``osid.repository.CompositionList``
        :raise: ``NullArgument`` -- ``composition_record_type`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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