docs: def Update(self, other, callback):
      """Adds existing triggers to this set, optionally rebuilding the registry.
  
      Used to aggregate trigger methods from Probes to Methods to Checks.
  
      Args:
        other: Another Triggers object.
        callback: Registers all the updated triggers to the specified function.
      """
      self.conditions.update(other.conditions)
      self._Register(other.conditions, callback)