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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 _connection_handler(self, event_name, data, channel_name):
 """Handle incoming data. :param str event_name: Name of the event. :param Any data: Data received. :param str channel_name: Name of the channel this event and data belongs to. """

        if channel_name in self.channels:
            self.channels[channel_name]._handle_event(event_name, data)