code: def test_polygonize():
      lines = [
          LineString([(0, 0), (1, 1)]),
          LineString([(0, 0), (0, 1)]),
          LineString([(0, 1), (1, 1)]),
          LineString([(1, 1), (1, 0)]),
          LineString([(1, 0), (0, 0)]),
          LineString([(5, 5), (6, 6)]),
          Point(0, 0),
          None,
      ]
      result = shapely.polygonize(lines)
      assert shapely.get_type_id(result) == 7  # GeometryCollection
      expected = GeometryCollection(
          [
              Polygon([(0, 0), (1, 1), (1, 0), (0, 0)]),
              Polygon([(1, 1), (0, 0), (0, 1), (1, 1)]),
          ]
      )
      assert result == expected
  
imports: import numpy
  import pytest
  import shapely
  from shapely import Geometry, GeometryCollection, GEOSException, LinearRing, LineString, MultiLineString, MultiPoint, MultiPolygon, Point, Polygon
  from shapely.testing import assert_geometries_equal
  from shapely.tests.common import all_types, empty, empty_line_string, empty_point, empty_polygon, ignore_invalid, line_string, multi_point, point, point_z
label_desc: Use image node_id 35 for calling a global function with example usage: test_polygonize() without return types