void setHasArrowIcon(boolean hasArrowIcon) {
    if (hasArrowIcon != myHasArrowIcon) {
      myHasArrowIcon = hasArrowIcon;
      synchronized (this) {
        if (myNativePeer != ID.NIL) {
          NST.setArrowImage(myNativePeer, myHasArrowIcon ? AllIcons.Mac.Touchbar.PopoverArrow : null);
        }
      }
    }
  }
void setHasArrowIcon(boolean hasArrowIcon)