The return type of `javafx.css.Match.getPseudoClasses` has been changed to `Set<PseudoClass>` instead of a non-public type. Most applications will not be impacted by this change, since this is not a method that applications ever need to call. In the unlikely event that an existing application binary does call this method, a `NoSuchMethodError` will be thrown. The solution is to recompile the application.