@abc.abstractmethod<EOL><INDENT>def get_sequence_rules(self):<DEDENT>
return<EOL>
Gets all ``SequenceRules``.

        :return: the returned ``SequenceRule`` list
        :rtype: ``osid.assessment.authoring.SequenceRuleList``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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