paddingOnly method
Add padding to the widget.
Implementation
Padding paddingOnly({
  double left = 0.0,
  double top = 0.0,
  double right = 0.0,
  double bottom = 0.0,
}) {
  return Padding(
    padding:
        EdgeInsets.only(top: top, left: left, right: right, bottom: bottom),
    child: this,
  );
}