docs: def save_activity(self, activity_form, *args, **kwargs):
          """Pass through to provider ActivityAdminSession.update_activity"""
          # Implemented from kitosid template for -
          # osid.resource.ResourceAdminSession.update_resource
          if activity_form.is_for_update():
              return self.update_activity(activity_form, *args, **kwargs)
          else:
              return self.create_activity(activity_form, *args, **kwargs)