@Benchmark
    public boolean normal() throws Exception {
        final EchoObserver responseObserver = new EchoObserver();
        final StreamObserver<BinaryPayload> requestObserver = binaryProxyClient.echo(responseObserver);
        requestObserver.onNext(PAYLOAD);
        requestObserver.onNext(PAYLOAD);
        // TODO(anuraag): Figure out why 3 requests doesn't work.
        requestObserver.onCompleted();
        return responseObserver.finish(2);
    }
A {@link Benchmark} to check performance of armeria-grpc with large payloads in the megabytes, which is
a relatively common use case for a binary proxy (metadata + large binary blobs).
benchmarks/jmh/src/jmh/java/com/linecorp/armeria/grpc/downstream/LargePayloadBenchmark.java