merge method
Merge another theme data into this one
Implementation
FlyThemeData merge(FlyThemeData? other) {
if (other == null) return this;
return FlyThemeData(
spacing: spacing.merge(other.spacing),
colors: colors.merge(other.colors),
radius: radius.merge(other.radius),
textStyle: textStyle.merge(other.textStyle),
font: font.merge(other.font),
fontWeight: fontWeight.merge(other.fontWeight),
leading: leading.merge(other.leading),
tracking: tracking.merge(other.tracking),
breakpoint: breakpoint.merge(other.breakpoint),
);
}