code: def test_problem_hparams(
      input_vocab_size=None, target_vocab_size=None, model_hparams=None
  ):
      """Problem hparams for testing model bodies."""
      p = TestProblem(input_vocab_size, target_vocab_size)
      return p.get_hparams(model_hparams)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  from tensor2tensor.data_generators import problem
  from tensor2tensor.data_generators import text_encoder
  from tensor2tensor.layers import modalities
  from tensor2tensor.utils import registry
  import tensorflow.compat.v1
label_desc: Use image node_id 1 for calling a global function with example usage: test_problem_hparams(input_vocab_size, target_vocab_size, model_hparams) and returns: p