def get_sequence_rules(self):
if self.retrieved:<EOL><INDENT>raise errors.IllegalState('<STR_LIT>')<EOL><DEDENT>self.retrieved = True<EOL>return objects.SequenceRuleList(self._results, runtime=self._runtime)<EOL>
Gets the ``SequenceRuleList`` resulting from a search.

        return: (osid.assessment.authoring.SequenceRuleList) - the
                sequence rule list
        raise:  IllegalState - list has already been retrieved
        *compliance: mandatory -- This method must be implemented.*