public class MySearchForm extends AbstractSearchForm {
  public class MainBox extends AbstractGroupBox {
    [...]

    @Order(10.0)
    public class ResetButton extends AbstractResetButton {
      @Override
      protected int getConfiguredHorizontalAlignment() {
        return 1;
      }
    }

    @Order(20.0)
    public class SearchButton extends AbstractSearchButton {
      @Override
      protected int getConfiguredHorizontalAlignment() {
        return 1;
      }
    }
  }
}