@Override
  public void showInCenterOf(@NotNull Component aComponent) {
    HelpTooltip.setMasterPopup(aComponent, this);
    Point popupPoint = getCenterOf(aComponent, getPreferredContentSize());
    show(aComponent, popupPoint.x, popupPoint.y, false);
  }
@Override
  public void showInCenterOf(@NotNull Component aComponent)