// _ = text, runnable, text, runnable, ...
// use e.g. maxToShow := 2 to hide all but 2 buttons in a pop-down menu
static JPanel jLabelWithButtons(S text, O... _) {
  optPar int maxToShow = 1000;
  ret centerAndEastWithMargin(jLabel(text), jcenteredbuttons_withPopDown(maxToShow, paramsWithout(_, 'maxToShow)));
}