static <A extends JComponent> A fontSize(float size, A a) {
  ret setFontSize(size, a);
}

static <A extends JComponent> A fontSize(A a, float size) {
  ret setFontSize(size, a);
}

static Float fontSize(JComponent c) {
  Font f = getFont(c);
  ret f == null ? null : f.getSize2D();
}