@utilities.arguments_not_none<EOL><INDENT>def get_assessment_part_item_session(self, proxy):<DEDENT>
if not self.supports_assessment_part_lookup():  <EOL><INDENT>raise errors.Unimplemented()<EOL><DEDENT>return sessions.AssessmentPartItemSession(proxy=proxy, runtime=self._runtime)<EOL>
Gets the ``OsidSession`` associated with the assessment part item service.

        return: (osid.assessment.authoring.AssessmentPartItemSession)
                - an ``AssessmentPartItemSession``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_assessment_part_item()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_assessment_part_lookup()`` is ``true``.*