code: def kill_task(self, app_id, task_id, scale=False, wipe=False):
          
          params = {'scale': scale, 'wipe': wipe}
          response = self._do_request('DELETE', '/v2/apps/{app_id}/tasks/{task_id}'
                                      .format(app_id=app_id, task_id=task_id), params)
          # Marathon is inconsistent about what type of object it returns on the multi
          # task deletion endpoint, depending on the version of Marathon. See:
          # https://github.com/mesosphere/marathon/blob/06a6f763a75fb6d652b4f1660685ae234bd15387/src/main/scala/mesosphere/marathon/api/v2/AppTasksResource.scala#L88-L95
          if "task" in response.json():
              return self._parse_response(response, MarathonTask, is_list=False, resource_name='task')
          else:
              return response.json()
docs: Kill a task.
  
          :param str app_id: application ID
          :param str task_id: the task to kill
          :param bool scale: if true, scale down the app by one if the task exists
  
          :returns: the killed task
          :rtype: :class:`marathon.models.task.MarathonTask`