@abc.abstractmethod<EOL><INDENT>def get_assessments(self):<DEDENT>
return<EOL>
Gets any assessments associated with this activity.

        :return: list of assessments
        :rtype: ``osid.assessment.AssessmentList``
        :raise: ``IllegalState`` -- ``is_assessment_based_activity()`` is ``false``
        :raise: ``OperationFailed`` -- unable to complete request

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