code: def main(argv=None):
      """Main function."""
      tf.test.main(argv)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import warnings
  from absl import flags
  from absl.testing import parameterized
  import numpy
  from six.moves import zip
  import tensorflow
  from tensorflow_graphics.util import tfg_flags
label_desc: Use image node_id 2 for calling a global function with example usage: main(argv) without return types