* @param $protocol String
* @return null|string
*/
- public function prepareUrlQuerySearchString( $query = null, $protocol = null) {
+ public function prepareUrlQuerySearchString( $query = null, $protocol = null ) {
$db = $this->getDb();
if ( !is_null( $query ) || $query != '' ) {
if ( is_null( $protocol ) ) {