code: def __init__(self, storage_specifier: str, **kwargs: Any) -> None:
      self.storage_specifier = storage_specifier
      self.extra_args = kwargs
      self.dask_client: "distributed.Client" | None = None
      self.tempfile: IO[Any] | None = None
  
file_path: optuna/optuna/testing/storages.py
imports: from __future__ import annotations
  import sys
  from types import TracebackType
  from typing import Any
  from typing import IO
  import fakeredis
  import pytest
  import optuna
  from optuna.storages import JournalFileStorage
  from optuna.testing.tempfile_pool import NamedTemporaryFilePool
label_desc: Use image node_id 1 to create a new StorageSupplier object  with example: obj = StorageSupplier(storage_specifier)