code: public static CmsConfirmationDialog show(String title, String message, final Runnable okAction) {
  
          return show(title, message, okAction, null);
      }
docs: Shows the confirmation dialog in a window.<p>
  
  @param title the window title
  @param message the message to display in the dialog
  @param okAction the action to execute when the user clicks OK
  
  @return the dialog instance