merge method
Implementation
@override
UIIconThemeData merge(covariant UIIconThemeData? other) {
return UIIconThemeData(
iconSize: other?.iconSize ?? iconSize,
containerSize: other?.containerSize ?? containerSize,
foregroundColor: other?.foregroundColor ?? foregroundColor,
backgroundColor: other?.backgroundColor ?? backgroundColor,
borderRadius: other?.borderRadius ?? borderRadius,
boxShadow: other?.boxShadow ?? boxShadow,
);
}