code: def _extract_to_stream(self, *, stream):
          
  
          try:
              return self._extract_direct(stream=stream)
          except UnsupportedImageTypeError:
              pass
  
          im = self._extract_transcoded()
          if im:
              im.save(stream, format='png')
              return '.png'
  
          raise UnsupportedImageTypeError(repr(self))
docs: Attempt to extract the image directly to a usable image file
  
          If possible, the compressed data is extracted and inserted into
          a compressed image file format without transcoding the compressed
          content. If this is not possible, the data will be decompressed
          and extracted to an appropriate format.
  
          Because it is not known until attempted what image format will be
          extracted, users should not assume what format they are getting back.
          When saving the image to a file, use a temporary filename, and then
          rename the file to its final name based on the returned file extension.
  
          Args:
              stream: Writable stream to write data to
  
          Returns:
              str: The file format extension