code: def test_image_mask_1(self):
      for mode in ("RGBA", "RGB", "L"):
          im = Image.new(mode, (200, 200), "white")
          im2 = getattr(self, "gradient_" + mode)
  
          self.assert_9points_paste(
              im,
              im2,
              self.mask_1,
              [
                  (255, 255, 255, 255),
                  (255, 255, 255, 255),
                  (127, 254, 127, 0),
                  (255, 255, 255, 255),
                  (255, 255, 255, 255),
                  (191, 190, 63, 64),
                  (127, 0, 127, 254),
                  (191, 64, 63, 190),
                  (255, 255, 255, 255),
              ],
          )
  
imports: from PIL import Image
  from .helper import assert_image_equal, cached_property
label_desc: Use image node_id 10 for calling the TestImagingPaste obj's underlying member method code with example usage: obj.test_image_mask_1() without return types