code: def test_serde_array_dtype() -> None:
      s = pl.Series(
          [[1, 2, 3], [None, None, None], [1, None, 3]],
          dtype=pl.Array(pl.Int32(), width=3),
      )
      assert_series_equal(pickle.loads(pickle.dumps(s)), s)
  
      nested_s = pl.Series(
          [[[1, 2, 3], [4, None]], None, [[None, None, 2]]],
          dtype=pl.List(pl.Array(pl.Int32(), width=3)),
      )
      assert_series_equal(
          pickle.loads(pickle.dumps(nested_s)), nested_s
      )
  
imports: from __future__ import annotations
  import io
  import pickle
  from datetime import datetime, timedelta
  import pytest
  import polars
  from polars import StringCache
  from polars.testing import assert_frame_equal, assert_series_equal
label_desc: Use image node_id 19 for calling a global function with example usage: test_serde_array_dtype() without return types