@Override
  protected ContentRootPanel createContentRootPane() {
    return new ContentRootPanel(this, getEditHandlers()) {
      @Nullable
      @Override
      protected ContentEntry getContentEntry() {
        return getThisContentEntry();
      }

      @Nullable
      @Override
      protected JComponent createRootPropertiesEditor(ModuleSourceRootEditHandler<?> editor, SourceFolder folder) {
        return editor.createPropertiesEditor(folder, this, myCallback);
      }
    };
  }
@Override
  protected ContentRootPanel createContentRootPane()