code: def testMainDoesNotCrash(self):
      tft_unit.skip_if_not_tf2("Tensorflow 2.x required.")
      dataset_tfxio_example.main("")
  
file_path: transform/examples/dataset_tfxio_example_test.py
imports: import tensorflow
  import dataset_tfxio_example
  from tensorflow_transform.beam import tft_unit
label_desc: Use image node_id 1 for calling the SimpleMainTest obj's underlying member method code with example usage: obj.testMainDoesNotCrash() without return types