code: def _build_dataset(self):
      dataset = (
          dataset_ops.Dataset.range(42)
          .window(6)
          .interleave(lambda x: x, cycle_length=2, num_parallel_calls=2)
      )
      return dataset
  
imports: from absl.testing import parameterized
  import numpy
  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.data.util import nest
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import sparse_tensor
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 1 for calling the WindowCheckpointTest obj's underlying member method code with example usage: obj._build_dataset() and returns: dataset