code: def put(self, todo_id):
          
          args = parser.parse_args()
          task = {'task': args['task']}
          TODOS[todo_id] = task
          return task, 201
docs: This is an example
          ---
          tags:
            - restful
          parameters:
            - in: body
              name: body
              schema:
                $ref: '#/definitions/Task'
            - in: path
              name: todo_id
              required: true
              description: The ID of the task, try 42!
              type: string
          responses:
            201:
              description: The task has been updated
              schema:
                $ref: '#/definitions/Task'