def handle_registered(self, server):
        if not self._registered:
            self.logger.info('Registered')
            self._registered = True
            for data in self._out_buffer:
                self.send(data)
            self._out_buffer = []
When the connection to the server is registered, send all pending
dataset/ETHPy150Open coleifer/irc/irc.py/IRCConnection.handle_registered