code: def test_preserve_auxiliary_channels_rgba():
      assert_aux_channel_preserved(
          mode="RGBA", transform_in_place=False, preserved_channel="A"
      )
  
imports: import datetime
  import os
  import re
  import shutil
  from io import BytesIO
  import pytest
  from PIL import Image, ImageMode, features
  from .helper import assert_image, assert_image_equal, assert_image_similar, assert_image_similar_tofile, hopper
label_desc: Use image node_id 27 for calling a global function with example usage: test_preserve_auxiliary_channels_rgba() without return types