code: def testSnapshotDoesNotExist(self):
      cluster = data_service_test_base.TestCluster(num_workers=1)
      snapshot_dir = data_service_test_base.TempDir()
      with self.assertRaises(errors.NotFoundError):
          dataset = dataset_ops.Dataset.load(snapshot_dir.full_path)
          dataset = dataset.apply(
              data_service_ops.distribute(
                  data_service_ops.ShardingPolicy.OFF,
                  cluster.dispatcher_address(),
              )
          )
          self.getDatasetOutput(dataset)
  
imports: import os
  import time
  from absl.testing import parameterized
  import numpy
  from tensorflow.python.data.experimental.kernel_tests.service import test_base
  from tensorflow.python.data.experimental.ops import data_service_ops
  from tensorflow.python.data.experimental.ops import distributed_save_op
  from tensorflow.python.data.experimental.service import _pywrap_snapshot_utils
  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 errors
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 10 for calling the DistributedSaveTest obj's underlying member method code with example usage: obj.testSnapshotDoesNotExist() without return types