ifSync method
Performs a side-effect if this is Sync.
Implementation
@override
@pragma('vm:prefer-inline')
Sync<T> ifSync(
@noFutures void Function(Sync<T> self, Sync<T> sync) noFutures,
) {
return Sync(() {
noFutures(this, this);
return this;
}).flatten().sync().unwrap();
}