static JCheckBox jCenteredCheckBox() {
  ret centerCheckBox(new JCheckBox());
}

static JCheckBox jCenteredCheckBox(bool checked) {
  ret centerCheckBox(new JCheckBox("", checked));
}

static JCheckBox jCenteredCheckBox(S text, bool checked) {
  ret centerCheckBox(new JCheckBox(text, checked));
}

static JCheckBox jCenteredCheckBox(S text) {
  ret centerCheckBox(new JCheckBox(text));
}
  
static JCheckBox jCenteredCheckBox(S text, bool checked, fO onChange) {
  ret centerCheckBox(jCheckBox(text, checked, onChange));
}
  
// onChange can be a Runnable or a voidfunc(bool)
static JCheckBox jCenteredCheckBox(bool checked, fO onChange) {
  ret centerCheckBox(jCheckBox(checked, onChange);
}

Began life as a copy of #1005426