public static @Nullable RadComponent getDraggerHost(final @NotNull GuiEditor editor) {
    final Ref<RadComponent> result = new Ref<>();
    iterate(
      editor.getRootContainer(),
      new ComponentVisitor<RadComponent>() {
        @Override
        public boolean visit(final RadComponent component) {
          if (component.hasDragger()) {
            result.set(component);
            return false;
          }
          return true;
        }
      }
    );

    return result.get();
  }
public static @Nullable RadComponent getDraggerHost(final @NotNull GuiEditor editor)