code: def parse_gzip(file_path):
      
      newDecoder = MMTFDecoder()
      newDecoder.decode_data(_unpack(gzip.open(file_path, "rb")))
      return newDecoder
docs: Return a decoded API to the data from a file path. File is gzip compressed.
      :param file_path: the input file path. Data is gzip compressed.
      :return an API to decoded data