- Preconditions.checkNotNull(actorSystem, "actorSystem should not be null");
- Preconditions.checkNotNull(cluster, "cluster should not be null");
- Preconditions.checkNotNull(configuration, "configuration should not be null");
- Preconditions.checkNotNull(datastoreContextFactory, "datastoreContextFactory should not be null");
+ requireNonNull(actorSystem, "actorSystem should not be null");
+ requireNonNull(cluster, "cluster should not be null");
+ requireNonNull(configuration, "configuration should not be null");
+ requireNonNull(datastoreContextFactory, "datastoreContextFactory should not be null");