code: def _check_is_none(expected, actual) -> bool:
      both_same = (expected is None and actual is None) or (
          expected is not None and actual is not None
      )
      assert both_same
      return expected is None
  
file_path: lets-plot/python-package/test/geo_data/gis/assertions.py
imports: from lets_plot.geo_data.gis.request import RegionQuery, MapRegion
  from lets_plot.geo_data.gis.response import GeocodedFeature, GeoPoint, GeoRect, Namesake, NamesakeParent, AmbiguousFeature, Boundary
label_desc: Use image node_id 10 for calling a global function with example usage: _check_is_none(expected, actual) and returns: unknown