code: def test_coqa_tokenize(self):
      self.assertEqual(
          metrics._coqa_tokenize("Maru the cat"), ["maru", "cat"]
      )
      self.assertEqual(
          metrics._coqa_tokenize("Maru  cat"), ["maru", "cat"]
      )
      self.assertEqual(
          metrics._coqa_tokenize("Maru the cat."), ["maru", "cat"]
      )
  
imports: from unittest import mock
  from absl.testing import absltest
  import numpy
  import seqio
  import sklearn.metrics
  from t5.evaluation import metrics
  from t5.evaluation import test_utils
label_desc: Use image node_id 35 for calling the MetricsTest obj's underlying member method code with example usage: obj.test_coqa_tokenize() without return types