private static void assertSuccess(StreamRecorder<?> recorder) {
        if (recorder.getError() != null) {
            throw new AssertionError(recorder.getError());
        }
    }
Start a fullDuplexCall which the server will not respond, and verify the deadline expires.
grpc/src/test/java/com/linecorp/armeria/client/grpc/GrpcClientTest.java