code: def test_line_curve_conversion(path_curves_line_csv):
      """Convert curved geometries to linear approximations"""
      with fiona.open(path_curves_line_csv) as col:
          assert col.schema["geometry"] == "Unknown"
          features = list(col)
          assert len(features) == 9
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_line_curve_conversion(path_curves_line_csv) without return types