mapdev\FacebookMessenger\Callback\Message::__construct PHP Method

    public function __construct($message)
    {
        $this->mid = Helper::array_find($message, 'mid');
        $this->seq = Helper::array_find($message, 'seq');
        $this->isText = !is_null(Helper::array_find($message, 'text'));
        if ($this->isText) {
            $this->text = Helper::array_find($message, 'text');
            $this->quick_reply = Helper::array_find($message, 'quick_reply.payload', null);
            //drill straight to payload
            if (!is_null($this->quick_reply)) {
                $this->isQuickReply = true;
            }
        }
        $this->isSticker = !is_null(Helper::array_find($message, 'sticker_id'));
        if ($this->isSticker) {
            $this->sticker_id = Helper::array_find($message, 'sticker_id');
        }
        $this->hasAttachments = !is_null(Helper::array_find($message, 'attachments'));
        if ($this->hasAttachments) {
            $this->attachments = collect(Helper::array_find($message, 'attachments'))->map(function ($attachment) {
                return new Attachment($attachment);
            });
        }
        //TODO Add checkout update
    }