public static void addGlobalSuccessInfoMessage(FacesContext facesContext) {
   String key = "your-request-processed-successfully";
   Object[] args = null;
   addGlobalInfoMessage(facesContext, key, args);
 }
 public static void addGlobalInfoMessage(FacesContext facesContext, String key, Object arg) {
   addGlobalInfoMessage(facesContext, key, new Object[] {arg});
 }