code: def test_make_valid_input():
      geom = Polygon([(0, 0), (1, 0), (1, 1), (0, 1), (0, 0)])
      valid = make_valid(geom)
      assert id(valid) == id(geom)
  
label_desc: Use image node_id 2 for calling a global function with example usage: test_make_valid_input() without return types