code: def forward(self, x):
      return x
  
file_path: mmocr/tests/test_models/test_textrecog/test_recognizers/test_encoder_decoder_recognizer_tta.py
imports: from unittest import TestCase
  import torch
  import torch.nn
  from mmengine.structures import LabelData
  from mmocr.models.textrecog.recognizers import EncoderDecoderRecognizerTTAModel
  from mmocr.structures import TextRecogDataSample
label_desc: Use image node_id 2 for calling the DummyModel obj's underlying member method code with example usage: obj.forward(x) and returns: x