code: def test_geojson() -> None:
      import bokeh.sampledata.sample_geojson as bsg
  
      assert isinstance(bsg.geojson, str)
  
imports: from __future__ import annotations
  import pytest
  from tests.support.util.api import verify_all
label_desc: Use image node_id 1 for calling a global function with example usage: test_geojson() without return types