code: def test_image_mask_RGBA(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.gradient_RGBA,
              [
                  (128, 191, 255, 191),
                  (208, 239, 239, 208),
                  (255, 255, 255, 255),
                  (112, 111, 206, 207),
                  (192, 191, 191, 191),
                  (239, 239, 207, 207),
                  (128, 1, 128, 254),
                  (207, 113, 112, 207),
                  (255, 191, 128, 191),
              ],
          )
  
imports: from PIL import Image
  from .helper import assert_image_equal, cached_property
label_desc: Use image node_id 12 for calling the TestImagingPaste obj's underlying member method code with example usage: obj.test_image_mask_RGBA() without return types