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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 notify(correlation_id, components, args = None):
 """ 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. """

        if components == None:
            return

        args = args if args != None else Parameters()
        for component in components:
            Notifier.notify_one(correlation_id, component, args)