@Test
    void givenRequestPath_whenGet_thenRequestToPath() throws Exception {
        final BlockingWebClient client = BlockingWebClient.of(server.httpUri());

        final AggregatedHttpResponse response = client.get("/hello/world");

        assertThat(response.contentUtf8()).isEqualTo("success");
    }
User-agent header should be overridden by ClientOption.HTTP_HEADER
core/src/test/java/com/linecorp/armeria/client/HttpClientIntegrationTest.java