resolve method
Implementation
T? resolve(BuildContext context,
[T? combine(T? previousValue, T? element)?]) {
T? rst;
values.forEach((key, value) {
if (key.isOfScreenScope(MediaQuery.of(context))) {
if (combine == null) {
rst = value;
} else {
rst = combine(rst, value);
}
}
});
return rst;
}