code: def notify(correlation_id, components, args = None):
          
          if components == None:
              return
  
          args = args if args != None else Parameters()
          for component in components:
              Notifier.notify_one(correlation_id, component, args)
docs: Notifies multiple components.
  
          To be notified components must implement [[INotifiable]] interface.
          If they don't the call to this method has no effect.
  
          :param correlation_id: (optional) transaction id to trace execution through call chain.
  
          :param components: a list of components that are to be notified.
  
          :param args: notification arguments.