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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 add_send_last_message(self, connection, send_last_message):
 """Adds a send_last_message function to the Dispatcher's dictionary of functions indexed by connection. Args: connection (str):
 A locally unique identifier provided by the receiver of messages. send_last_message (fn):
 The method that should be called by the dispatcher to respond to messages which arrive via connection, when the connection should be closed after the message has been sent. """

        self._send_last_message[connection] = send_last_message
        LOGGER.debug("Added send_last_message function "
                     "for connection %s", connection)