@Override public RFuture<V> call() throws Exception { return instance.takeFirstAsync(); } });
@Override public RFuture<V> call() throws Exception { return instance.takeFirstAsync(); } });
@Override public RFuture<V> call() throws Exception { return instance.takeFirstAsync(); } });
@Override public RFuture<V> call() throws Exception { return instance.takeFirstAsync(); } });