def save(self):
        tmp_path = self.path + '.tmp'
        with open(tmp_path, 'w') as f:
            f.write(json.dumps(self.body_labels.items()))
        os.rename(tmp_path, self.path)
def send(self, command):
        if self._bufferedCommands is None:
            self._bufferedCommands = command
        else:
            self._bufferedCommands += "\n" + command