code: def testIteratorEndsBeforeFirstElem(self):
      dataset = dataset_ops.Dataset.range(1).shard(5, 2)
      self.assertDatasetProduces(dataset, expected_output=[])
  
imports: from absl.testing import parameterized
  from tensorflow.python.data.experimental.ops import random_access
  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.ops import options
  from tensorflow.python.framework import combinations
  from tensorflow.python.framework import errors
  from tensorflow.python.platform import test
label_desc: Use image node_id 8 for calling the ShardTest obj's underlying member method code with example usage: obj.testIteratorEndsBeforeFirstElem() without return types