static <A extends IHasChangeListeners> A updateChain(ChangeTriggerable b, A a) {
  ret onChange(a, b);
}

static <A extends IHasChangeListeners> A updateChain(Updateable b, A a) {
  ret onChange(a, b);
}

static <A extends JTextComponent> A updateChain(Updateable b, A a) {
  onChange(a, new UpdateTrigger(b));
  ret a;
}

static <A extends IHasChangeListeners> A updateChain(Runnable b, A a) {
  ret onChange(a, b);
}

meta-for Runnable also as ChangeTriggerable, Updateable {
  static <A extends JTextComponent> A updateChain(Runnable b, A a) {
    onChange(a, b);
    ret a;
  }
}

static <A extends Iterable> A updateChain(O b, A l) {
  fOr (a : l)
    preciseCall(mainFunctionHolder updateChain, "updateChain", b, a);
  ret l;
}