code: def tearDown(self) -> None:
      clear_session()
  
imports: import tempfile
  import unittest
  from tensorflow.python.keras.backend import clear_session
  from tfaip.util.tfaipargparse import post_init
  from calamari_ocr.ocr.model.layers.bilstm import BiLSTMLayerParams
  from calamari_ocr.ocr.model.layers.concat import ConcatLayerParams
  from calamari_ocr.ocr.model.layers.conv2d import Conv2DLayerParams
  from calamari_ocr.ocr.model.layers.dilatedblock import DilatedBlockLayerParams
  from calamari_ocr.ocr.model.layers.layer import IntVec2D
  from calamari_ocr.ocr.model.layers.pool2d import MaxPool2DLayerParams
  from calamari_ocr.ocr.model.layers.transposedconv2d import TransposedConv2DLayerParams
  from calamari_ocr.ocr.model.params import default_layers
  from calamari_ocr.ocr.training.params import parse_network_param
  from calamari_ocr.scripts.train import main, parse_args
  from calamari_ocr.test.test_train_file import uw3_trainer_params
label_desc: Use image node_id 2 for calling the TestNetworkArchitectures obj's underlying member method code with example usage: obj.tearDown() without return types