@Override
    public void lazyHello(HelloRequest request, StreamObserver<HelloReply> responseObserver) {
        // You can use the event loop for scheduling a task.
        ServiceRequestContext.current().contextAwareEventLoop().schedule(() -> {
            responseObserver.onNext(buildReply(toMessage(request.getName())));
            responseObserver.onCompleted();
        }, 3, TimeUnit.SECONDS);
    }
Sends a {@link HelloReply} 3 seconds after receiving a request.
armeria-example/armeria-grpc-server/src/main/java/com/example/grpc/armeria/HelloServiceImpl.java