code: def test_tuplize(self, inputs, targets):
      self.assertEqual(multi_problem_v2.tuplize(inputs), targets)
  
file_path: tensor2tensor/tensor2tensor/data_generators/multi_problem_v2_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from absl.testing import parameterized
  import numpy
  from tensor2tensor.data_generators import multi_problem_v2
  from tensor2tensor.data_generators import problem
  import tensorflow.compat.v1
label_desc: Use image node_id 1 for calling the MultiProblemV2Test obj's underlying member method code with example usage: obj.test_tuplize(inputs, targets) without return types