static <A extends Component> A possiblyInternalFrameTitle(A c, S title) {
  JInternalFrame f = getInternalFrame(c);
  if (f != null) internalFrameTitle(f, title);
  else frameTitle(getFrame(c), title);
  ret c;
}

static <A extends Component> A possiblyInternalFrameTitle(A c) {
  JInternalFrame f = getInternalFrame(c);
  ret f != null ? internalFrameTitle(f) : frameTitle(getFrame(c));
}