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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 trigger(self, event_name, data):
 """Trigger an event on this channel. Only available for private or presence channels :param event_name: The name of the event. Must begin with 'client-'' :type event_name: str :param data: The data to send with the event. """

        if self.connection:
            if event_name.startswith("client-"):
                if self.name.startswith("private-") or self.name.startswith("presence-"):
                    self.connection.send_event(event_name, data, channel_name=self.name)