code: def test(self):
      components = np.array(
          [0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 0, 0, 2, 2, 0, 0],
          dtype=np.int64,
      )
      self.verify_unused_iterator(
          lambda: self._build_dataset(components),
          num_outputs=12,
          verify_exhausted=False,
      )
      self.verify_multiple_breaks(
          lambda: self._build_dataset(components),
          num_outputs=12,
          verify_exhausted=False,
      )
      self.verify_reset_restored_iterator(
          lambda: self._build_dataset(components),
          num_outputs=12,
          verify_exhausted=False,
      )
  
imports: from absl.testing import parameterized
  import numpy
  from tensorflow.core.lib.core import error_codes_pb2
  from tensorflow.python.data.kernel_tests import checkpoint_test_base
  from tensorflow.python.data.kernel_tests import test_base
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.ops import string_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 2 for calling the GroupByWindowCheckpointTest obj's underlying member method code with example usage: obj.test() without return types