paragraph1\phpFCM\Message::setTimeToLive PHP Method

See also: https://firebase.google.com/docs/cloud-messaging/concept-options#ttl

public setTimeToLive ( integer $ttl ) : Message
$ttl	integer
return	Message

    public function setTimeToLive($ttl)
    {
        $this->timeToLive = $ttl;
        return $this;
    }

Message