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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def use_absl_handler():
 """Uses the ABSL logging handler for logging if not yet configured. The absl handler is already attached to root if there are no other handlers attached when importing this module. Otherwise, this method is called in app.run() so absl handler is used. """

  absl_handler = get_absl_handler()
  if absl_handler not in logging.root.handlers:
    logging.root.addHandler(absl_handler)
    FLAGS['verbosity']._update_logging_levels()