code: def create_lut():
      for op in (
          "corner",
          "dilation4",
          "dilation8",
          "erosion4",
          "erosion8",
          "edge",
      ):
          lb = ImageMorph.LutBuilder(op_name=op)
          lut = lb.build_lut()
          with open(f"Tests/images/{op}.lut", "wb") as f:
              f.write(lut)
  
imports: import pytest
  from PIL import Image, ImageMorph, _imagingmorph
  from .helper import assert_image_equal_tofile, hopper
label_desc: Use image node_id 7 for calling a global function with example usage: create_lut() without return types