code: def testSnapshotRecoveryFailsWithOutOfBoundsSourceName(self):
      cluster = data_service_test_base.TestCluster(num_workers=0)
      snapshot_dir = data_service_test_base.TempDir()
      self.evaluate(
          distributed_save_op.distributed_save(
              self._get_dataset(),
              snapshot_dir.full_path,
              cluster.dispatcher_address(),
          )
      )
  
      os.makedirs(
          os.path.join(
              self._splits_dir(snapshot_dir.full_path), "source_1"
          )
      )
      with self.assertRaisesRegex(RuntimeError, "Found conflict"):
          cluster.restart_dispatcher()
  
imports: import collections
  import os
  import pathlib
  import time
  from absl.testing import parameterized
  from tensorflow.python.data.experimental.kernel_tests.service import test_base
  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 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.platform import test
label_desc: Use image node_id 5 for calling the SnapshotFtTest obj's underlying member method code with example usage: obj.testSnapshotRecoveryFailsWithOutOfBoundsSourceName() without return types