/**
* Call array_map on the suggestions array
- * @param callback $callback
+ * @param callable $callback
* @return array
*/
public function map( $callback ) {
/**
* Filter the suggestions array
- * @param callback $callback Callable accepting single SearchSuggestion
+ * @param callable $callback Callable accepting single SearchSuggestion
* instance returning bool false to remove the item.
* @return int The number of suggestions removed
*/