@utilities.arguments_not_none<EOL><INDENT>def get_relationships_by_record_type(self, relationship_record_type):<DEDENT>
<EOL>return objects.RelationshipList([])<EOL>
Gets a ``RelationshipList`` containing the given relationship record ``Type``.

        arg:    relationship_record_type (osid.type.Type): a
                relationship record type
        return: (osid.relationship.RelationshipList) - the returned
                ``RelationshipList``
        raise:  NullArgument - ``relationship_record_type`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*