code: def get_gradebook_column_summary(self, gradebook_column_id):
          
          gradebook_column = self.get_gradebook_column(gradebook_column_id)
          summary_map = gradebook_column._my_map
          summary_map['gradebookColumnId'] = str(gradebook_column.ident)
          return GradebookColumnSummary(osid_object_map=summary_map,
                                        runtime=self._runtime,
                                        proxy=self._proxy)
docs: Gets the ``GradebookColumnSummary`` for summary results.
  
          arg:    gradebook_column_id (osid.id.Id): ``Id`` of the
                  ``GradebookColumn``
          return: (osid.grading.GradebookColumnSummary) - the gradebook
                  column summary
          raise:  NotFound - ``gradebook_column_id`` is not found
          raise:  NullArgument - ``gradebook_column_id`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          raise:  Unimplemented - ``has_summary()`` is ``false``
          *compliance: mandatory -- This method is must be implemented.*