Preconditions.checkNotNull(cluster, "cluster should not be null");
Preconditions.checkNotNull(configuration, "configuration should not be null");
Preconditions.checkNotNull(datastoreContext, "datastoreContext should not be null");
Preconditions.checkNotNull(cluster, "cluster should not be null");
Preconditions.checkNotNull(configuration, "configuration should not be null");
Preconditions.checkNotNull(datastoreContext, "datastoreContext should not be null");