/**
* @param int $ns The namespace of the article
* @param string $text The name of the article
- * @return array( int namespace, string dbkey, string pagename ) or null on error
+ * @return array|null [ int namespace, string dbkey, string pagename ] or null on error
*/
protected function getNamespaceKeyAndText( $ns, $text ) {
if ( $text == '' ) {