code: def _check_gzipped_input(in_file, data):
      
      grabix = config_utils.get_program("grabix", data["config"])
      is_bgzip = subprocess.check_output([grabix, "check", in_file])
      if is_bgzip.strip() == "yes":
          return False, False
      else:
          return True, True
docs: Determine if a gzipped input file is blocked gzip or standard.