def __missing__(self, key):
        if self.default_factory is None:
            raise KeyError(key)
        else:
            ret = self[key] = self.default_factory(name=key)
            return ret
def send(self, command):
        if self._bufferedCommands is None:
            self._bufferedCommands = command
        else:
            self._bufferedCommands += "\n" + command