/**
* Remove an asset from the category
*
* @param Asset $asset
* @return $this
*/
public function removeAsset(Asset $asset)
{
ListManager::remove($this, 'assets', $asset, ['getId']);
return $this;
}
/**
* Remove an article from the category
*
* @param Article $article
* @return $this
*/
public function removeArticle(Article $article)
{
ListManager::remove($this, 'articles', $article, ['getId']);
return $this;
}