public static void addStyleNames(UIObject o, String styles) {
        if (o == null || styles == null || styles.isEmpty()) return;
        processStyleNames(o.getElement(), styles, true/*add*/);
    }
public static void addStyleNames ( UIObject o , String styles ) { if ( o == null || styles == null || styles . isEmpty ( ) ) return ; processStyleNames ( o . getElement ( ) , styles , true ) ; }
@param styles - space separated style names