How can i access the "getAttachments" of message received? about fb-messenger-sdk HOT 1 OPEN

if ($message->hasAttachments()) {
    $attachments = $message->getAttachments();
    $images = [];
    foreach ($attachments as $attachment) {
    	$isSticker = array_key_exists('sticker_id', $attachment['payload']);

          switch($attachment['type']) {
          	case 'location':
				$lat = $attachment['payload']['coordinates']['lat'];
                $long = $attachment['payload']['coordinates']['long'];
          	break;

          	case 'image': 
				$images[] = $attachment['payload']['url'];
          	break;
          	default:

          }
    }
}