code: def Decompress(self, compressed_data):
      
      try:
        if hasattr(lzma, 'LZMA_VERSION'):
          # Note that we cannot use max_length=0 here due to different
          # versions of the lzma code.
          uncompressed_data = self._lzma_decompressor.decompress(
              compressed_data, 0)
        else:
          uncompressed_data = self._lzma_decompressor.decompress(compressed_data)
  
        remaining_compressed_data = getattr(
            self._lzma_decompressor, 'unused_data', b'')
  
      except (EOFError, IOError, LZMAError) as exception:
        raise errors.BackEndError((
            'Unable to decompress XZ compressed stream with error: '
            '{0!s}.').format(exception))
  
      return uncompressed_data, remaining_compressed_data
docs: Decompresses the compressed data.
  
      Args:
        compressed_data (bytes): compressed data.
  
      Returns:
        tuple(bytes, bytes): uncompressed data and remaining compressed data.
  
      Raises:
        BackEndError: if the XZ compressed stream cannot be decompressed.