public void showWarning(@NotNull @Nls String elementDescription, @NotNull ProjectModelExternalSource externalSource) {
    myLabel.setVisible(true);
    myLabel.setBorder(JBUI.Borders.empty(5, 5));
    myLabel.setIcon(AllIcons.General.BalloonWarning);
    myLabel.setText(UIUtil.toHtml(getWarningText(elementDescription, externalSource)));
  }
public void showWarning(@NotNull @Nls String elementDescription, @NotNull ProjectModelExternalSource externalSource)