code: def test_getxmp(self):
      with Image.open("Tests/images/lab.tif") as im:
          if ElementTree is None:
              with pytest.warns(UserWarning):
                  assert im.getxmp() == {}
          else:
              xmp = im.getxmp()
  
              description = xmp["xmpmeta"]["RDF"]["Description"]
              assert description[0]["format"] == "image/tiff"
              assert description[3]["BitsPerSample"]["Seq"]["li"] == [
                  "8",
                  "8",
                  "8",
              ]
  
imports: import os
  from io import BytesIO
  import pytest
  from PIL import Image, ImageFile, TiffImagePlugin
  from PIL.TiffImagePlugin import RESOLUTION_UNIT, X_RESOLUTION, Y_RESOLUTION
  from .helper import assert_image_equal, assert_image_equal_tofile, assert_image_similar, assert_image_similar_tofile, hopper, is_pypy, is_win32
label_desc: Use image node_id 57 for calling the TestFileTiff obj's underlying member method code with example usage: obj.test_getxmp() without return types