@Override
        public HttpResponse execute(ClientRequestContext ctx, HttpRequest req) throws Exception {
            final RequestHeaders requestHeaders = req.headers().toBuilder()
                                                     .add(HEADER, testInfo.getDisplayName())
                                                     .build();
            req = req.withHeaders(requestHeaders);
            ctx.updateRequest(req);
            return unwrap().execute(ctx, req);
        }
Creates a new instance that decorates the specified {@link HttpClient}.
core/src/test/java/com/linecorp/armeria/client/ContextCancellationTest.java