code: def __call__(self, text):
      return text
  
imports: import unittest
  from unittest.mock import patch
  import torch
  from transformers import AutoTokenizer
  from trl import AutoModelForCausalLMWithValueHead, TextEnvironment, TextHistory
label_desc: Use image node_id 1 for calling the DummyTool obj's underlying member method code with example usage: obj.__call__(text) and returns: text