Sharing::getLinkObject

public function getLinkObject()
{
	if(!$this->linkObjectId)
	{
		return null;
	}

	if(isset($this->linkObject) && $this->linkObjectId === $this->linkObject->getId())
	{
		return $this->linkObject;
	}
	$this->linkObject = BaseObject::loadById($this->linkObjectId);

	return $this->linkObject;
}