code: def test_save_rgba(self, tmp_path):
      im = hopper("RGBA")
      outfile = str(tmp_path / "temp.tif")
      im.save(outfile)
  
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 16 for calling the TestFileTiff obj's underlying member method code with example usage: obj.test_save_rgba(tmp_path) without return types