code: public function renameNx($name): bool
      {
          if ($name instanceof self) {
              $name = $name->key;
          }
          $ret = $this->redis->renamenx($this->key, $name);
          if ($ret === self::RESPONSE_SUCCESS) {
              $this->key = $name;
  
              return true;
          }
  
          return false;
      }
docs: @param RedisObject|string $name Key or other RedisObject as new key.
  
  @return bool True if key was renamed. False if key already exists.