persistent = $persistent; return $this; } /** * Is the comment persistent? * * @return bool */ public function getPersistent() { return $this->persistent; } /** * Set the time when the acknowledgement should expire * * @param int $expireTime * * @return $this */ public function setExpireTime($expireTime) { $this->expireTime = (int) $expireTime; return $this; } /** * Get the time when the acknowledgement should expire * * @return int|null */ public function getExpireTime() { return $this->expireTime; } }