merge method
Implementation
EnhanceNumberCardConfig merge(EnhanceNumberCardConfig? other) {
if (other == null) return this;
return copyWith(
runningSpace: other._runningSpace,
itemRunningSpace: other._itemRunningSpace,
dividerWidth: other._dividerWidth,
titleTextStyle: titleTextStyle.merge(other._titleTextStyle),
descTextStyle: descTextStyle.merge(other._descTextStyle),
);
}