docs: def save_grade_system(self, grade_system_form, *args, **kwargs):
          """Pass through to provider GradeSystemAdminSession.update_grade_system"""
          # Implemented from kitosid template for -
          # osid.resource.ResourceAdminSession.update_resource
          if grade_system_form.is_for_update():
              return self.update_grade_system(grade_system_form, *args, **kwargs)
          else:
              return self.create_grade_system(grade_system_form, *args, **kwargs)