code: def testBadDispatcherAddress(self):
      dataset = dataset_ops.Dataset.range(10)
      with self.assertRaisesRegex(ValueError, "must be a string"):
          self.evaluate(
              distributed_save_op.distributed_save(dataset, "", 1)
          )
      with self.assertRaisesRegex(ValueError, "must not be empty"):
          self.evaluate(
              distributed_save_op.distributed_save(dataset, "", "")
          )
  
imports: import os
  import shutil
  import tempfile
  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 13 for calling the DistributedSaveTest obj's underlying member method code with example usage: obj.testBadDispatcherAddress() without return types