/**
     * Returns the url of the publisher logo
     *
     * @return string
     **/
    protected function publisherLogo()
    {
        if ( !$this->publisherId )
            return null;

        $publisherFolder = $this->applicationLocalized->getPublisherFolderFromPath( $this->publisherId );

        if ( !$publisherFolder )
            return null;

        return $publisherFolder->attribute( 'translation' )->attribute( 'get_name_logo' );
    }