docs: def get_assessment_part_item_session_for_bank(self, bank_id, proxy):
          """Gets the ``OsidSession`` associated with the assessment part item service for the given bank.
  
          arg:    bank_id (osid.id.Id): the ``Id`` of the ``Bank``
          return: (osid.assessment.authoring.AssessmentPartItemSession)
                  - an ``AssessmentPartItemSession``
          raise:  NotFound - no ``Bank`` found by the given ``Id``
          raise:  NullArgument - ``bank_id`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  Unimplemented - ``supports_assessment_part_item()`` or
                  ``supports_visible_federation()`` is ``false``
          *compliance: optional -- This method must be implemented if
          ``supports_assessment_part_item()`` and
          ``supports_visible_federation()`` are ``true``.*
  
          """
          if not self.supports_assessment_part_lookup():  # This is kludgy, but only until Tom fixes spec
              raise errors.Unimplemented()
  
          # Also include check to see if the catalog Id is found otherwise raise errors.NotFound
          # pylint: disable=no-member
          return sessions.AssessmentPartItemSession(bank_id, proxy=proxy, runtime=self._runtime)