public function expireAt($timestamp, bool $milliseconds = false): bool
    {
        if ($milliseconds) {
            $return = $this->redis->pexpireat($this->key, $timestamp);
        } else {
            $return = $this->redis->expireAt($this->key, $timestamp);
        }

        return $return === self::RESPONSE_SUCCESS;
    }
public function expireAt($timestamp, bool $milliseconds = false): bool
    {
        if ($milliseconds) {
            $return = $this->redis->pexpireat($this->key, $timestamp);
        } else {
            $return = $this->redis->expireAt($this->key, $timestamp);
        }

        return $return === self::RESPONSE_SUCCESS;
    }
@param int  $timestamp    Timestamp in seconds or milliseconds since Unix epoch.

@param bool $milliseconds If set to true, $timestamp is interpreted as milliseconds timestamp.

@return bool True on success. False otherwise.