code: def execute_forever(method, interval_s):  # pylint: disable=invalid-name
    
    interval = Interval(method)
    interval.start(interval_s)
    return interval
docs: Executes a method forever at the specified interval.
  
    Args:
      method: The callable to execute.
      interval_s: The number of seconds to start the execution after each method
          finishes.
    Returns:
      An Interval object.