code: def roundtrip(im, **options):
      out = BytesIO()
      im.save(out, "JPEG2000", **options)
      test_bytes = out.tell()
      out.seek(0)
      with Image.open(out) as im:
          im.bytes = test_bytes  # for testing only
          im.load()
      return im
  
imports: from __future__ import annotations
  import os
  import re
  from io import BytesIO
  import pytest
  from PIL import Image, ImageFile, Jpeg2KImagePlugin, UnidentifiedImageError, _binary, features
  from .helper import assert_image_equal, assert_image_similar, assert_image_similar_tofile, skip_unless_feature, skip_unless_feature_version
label_desc: Use image node_id 1 for calling a global function with example usage: roundtrip(im) and returns: im