code: def test_anonymous_scan_explain(io_files_path: Path) -> None:
      file = io_files_path / "foods1.ndjson"
      q = pl.scan_ndjson(source=file)
      assert "Anonymous" in q.explain()
      assert "Anonymous" in q.show_graph(raw_output=True)
  
file_path: polars/py-polars/tests/unit/io/test_lazy_json.py
imports: from __future__ import annotations
  from typing import TYPE_CHECKING
  import pytest
  import polars
  from polars.testing import assert_frame_equal
label_desc: Use image node_id 8 for calling a global function with example usage: test_anonymous_scan_explain(io_files_path) without return types