registerDatastoreService function
Registers the Datastore object within the current service scope.
The provided datastore
object will be available via the top-level
datastore
getter.
Calling this function outside of a service scope will result in an error. Calling this function more than once inside the same service scope is not allowed.
Implementation
void registerDatastoreService(Datastore datastore) {
ss.register(_datastoreKey, datastore);
}