def get_relationships(self):
url_path = ('<STR_LIT>' +<EOL>self._catalog_idstr + '<STR_LIT>')<EOL>return objects.RelationshipList(self._get_request(url_path))<EOL>
Gets all ``Relationships``.

        return: (osid.relationship.RelationshipList) - a list of
                ``Relationships``
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*