code: def test_conversion(self):
      flags.FLAGS(
          [
              "checkpoint_to_onnx.py",
              "-i=%s" % self.model,
              "-o=%s" % self.output,
              "--input_nodes=input:0",
              "--output_nodes=output/Softmax:0",
          ]
      )
      self.c2o._main(None)
  
file_path: auptimizer/tests/dlconvert/test_checkpoint_to_onnx.py
imports: import unittest
  import sys
  from absl import flags
  from os import path, remove
  from six import PY2
  import json
  from tensorflow import __version__
  from tensorflow.python.util import deprecation
label_desc: Use image node_id 2 for calling the CheckpointToOnnxTestCase obj's underlying member method code with example usage: obj.test_conversion() without return types