code: def test_doc_randomstate(generator_class):
      assert "mean" in generator_class(5).normal.__doc__
  
imports: from __future__ import annotations
  import pytest
  import numpy
  import dask
  import dask.array
  from dask.array.core import Array
  from dask.array.utils import assert_eq
  from dask.multiprocessing import _dumps, _loads
  from dask.utils import key_split
label_desc: Use image node_id 5 for calling a global function with example usage: test_doc_randomstate(generator_class) without return types