@Override
        public Stream<? extends Arguments> provideArguments(ExtensionContext context) {
            return Stream.of(true, false)
                         .map(streaming -> ArmeriaRetrofit.builder(server.httpUri())
                                                          .streaming(streaming)
                                                          .addConverterFactory(converterFactory)
                                                          .build()
                                                          .create(Service.class))
                         .map(Arguments::of);
        }
Tests https://github.com/line/armeria/pull/386
retrofit2/src/test/java/com/linecorp/armeria/client/retrofit2/ArmeriaCallFactoryTest.java