class_docstr: Interface for working with time and timers.
docstr: Registers a timer to be fired when processing time passes the given time.
  
  Timers can internally be scoped to keys and/or windows. When you set a timer in a keyed
  context, such as in an operation on KeyedStream then that context will so be active when you
  receive the timer notification.
  
  :param timestamp: The processing time of the timer to be registered.
code: def register_processing_time_timer(self, timestamp: int):
      """
      Registers a timer to be fired when processing time passes the given time.
  
      Timers can internally be scoped to keys and/or windows. When you set a timer in a keyed
      context, such as in an operation on KeyedStream then that context will so be active when you
      receive the timer notification.
  
      :param timestamp: The processing time of the timer to be registered.
      """
      pass
  
file_path: flink/flink-python/pyflink/datastream/timerservice.py
imports: from abc import ABC, abstractmethod
label_desc: Use image node_id 3 for calling the TimerService obj's underlying member method code with example usage: obj.register_processing_time_timer(timestamp) without return types