@abc.abstractmethod<EOL><INDENT>def get_assessment_basic_authoring_session(self):<DEDENT>
return<EOL>
Gets the ``OsidSession`` associated with the assessment authoring service.

        :return: an ``AssessmentBasicAuthoringSession``
        :rtype: ``osid.assessment.AssessmentBasicAuthoringSession``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unimplemented`` -- ``supports_assessment_basic_authoring()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_assessment_basic_authoring()`` is ``true``.*