code: @Override
      public void markInitialState() {
  
          super.markInitialState();
          Converter c = getConverter();
          if (c != null && c instanceof PartialStateHolder) {
              ((PartialStateHolder) c).markInitialState();
          }
  
      }
docs: <p>
  In addition to the actions taken in {@link UIComponentBase}
  when {@link PartialStateHolder#markInitialState()} is called,
  check if the installed {@link Converter} is a PartialStateHolder and
  if it is, call {@link javax.faces.component.PartialStateHolder#markInitialState()}
  on it.
  </p>