code: def test_camelcase_to_snakecase(self):
      self.assertEqual(
          "typical_camel_case",
          misc_utils.camelcase_to_snakecase("TypicalCamelCase"),
      )
      self.assertEqual(
          "numbers_fuse2gether",
          misc_utils.camelcase_to_snakecase("NumbersFuse2gether"),
      )
      self.assertEqual(
          "numbers_fuse2_gether",
          misc_utils.camelcase_to_snakecase("NumbersFuse2Gether"),
      )
      self.assertEqual(
          "lstm_seq2_seq",
          misc_utils.camelcase_to_snakecase("LSTMSeq2Seq"),
      )
      self.assertEqual(
          "starts_lower",
          misc_utils.camelcase_to_snakecase("startsLower"),
      )
      self.assertEqual(
          "starts_lower_caps",
          misc_utils.camelcase_to_snakecase("startsLowerCAPS"),
      )
      self.assertEqual(
          "caps_fuse_together",
          misc_utils.camelcase_to_snakecase("CapsFUSETogether"),
      )
      self.assertEqual(
          "startscap", misc_utils.camelcase_to_snakecase("Startscap")
      )
      self.assertEqual(
          "s_tartscap", misc_utils.camelcase_to_snakecase("STartscap")
      )
  
file_path: tensor2tensor/tensor2tensor/utils/misc_utils_test.py
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from tensor2tensor.utils import hparam
  from tensor2tensor.utils import misc_utils
  import tensorflow.compat.v1
label_desc: Use image node_id 1 for calling the MiscUtilsTest obj's underlying member method code with example usage: obj.test_camelcase_to_snakecase() without return types