code: def assert_9points_paste(self, im, im2, mask, expected):
      im3 = im.copy()
      im3.paste(im2, (0, 0), mask)
      self.assert_9points_image(im3, expected)
  
      # Abbreviated syntax
      im.paste(im2, mask)
      self.assert_9points_image(im, expected)
  
imports: from __future__ import annotations
  import pytest
  from PIL import Image
  from .helper import CachedProperty, assert_image_equal
label_desc: Use image node_id 2 for calling the TestImagingPaste obj's underlying member method code with example usage: obj.assert_9points_paste(im, im2, mask, expected) without return types