code: def test_image_path():
      assert path.exists(mahotas.demos.image_path("luispedro.jpg"))
      assert not path.exists(
          mahotas.demos.image_path("something-that-does-not-exist")
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: test_image_path() without return types