code: def test_name_unique(client: "Client") -> None:
      s1 = DaskStorage()
      s2 = DaskStorage()
      assert s1.name != s2.name
  
imports: from contextlib import contextmanager
  import time
  from typing import Iterator
  import numpy
  import pytest
  import optuna
  from optuna._imports import try_import
  from optuna.integration.dask import _OptunaSchedulerExtension
  from optuna.integration.dask import DaskStorage
  from optuna.testing.tempfile_pool import NamedTemporaryFilePool
  from optuna.trial import Trial
label_desc: Use image node_id 7 for calling a global function with example usage: test_name_unique(client) without return types