SortBlockAction::execute

public function execute(bool $undo = true): bool
{
	$up = (bool)$this->params['up'];
	$blockId = (int)$this->params['block'];
	$landing = Landing::createInstance($this->params['lid']);
	if ($landing->exist())
	{
		return ($up === $undo)
			? $landing->downBlock($blockId)
			: $landing->upBlock($blockId)
		;
	}

	return false;
}