Sharing::getLinkStorage

public function getLinkStorage()
{
	if(!$this->linkStorageId)
	{
		return null;
	}

	if(isset($this->linkStorage) && $this->linkStorageId === $this->linkStorage->getId())
	{
		return $this->linkStorage;
	}
	$this->linkStorage = Storage::loadById($this->linkStorageId);

	return $this->linkStorage;
}