public function add($id, $mediaId)
    {
        return $this->getFactory()->createResult(
            $this->getApi()->addMediaToList($id, $mediaId)
        );
    }
public function add($id, $mediaId)
    {
        return $this->getFactory()->createResult(
            $this->getApi()->addMediaToList($id, $mediaId)
        );
    }
public function add ( $ id , $ mediaId ) { return $ this -> getFactory ( ) -> createResult ( $ this -> getApi ( ) -> addMediaToList ( $ id , $ mediaId ) ) ; }
This method lets users add new movies to a list that they created.
A valid session id is required.

@param  string     $id
@param  int        $mediaId
@return ItemStatus
This method lets users add new movies to a list that they created . A valid session id is required .