code: public static void clearErrorStyles(CmsTabbedPanel<?> tabbedPanel) {
  
          for (int i = 0; i < tabbedPanel.getTabCount(); i++) {
              Widget tab = tabbedPanel.getTabWidget(i);
              tab.setTitle(null);
              tab.getParent().removeStyleName(I_CmsLayoutBundle.INSTANCE.form().hasError());
              tab.getParent().removeStyleName(I_CmsLayoutBundle.INSTANCE.form().hasWarning());
          }
      }
docs: Clears the error styles on the given tabbed panel.<p>
  
  @param tabbedPanel the tabbed panel