@Override
            public void configureWebClient(WebClientBuilder wcb) throws Exception {
                ServerRule.this.configureWebClient(wcb);
            }
Creates a new instance.

@param autoStart {@code true} if the {@link Server} should start automatically.
                 {@code false} if the {@link Server} should start when a user calls {@link #start()}.
junit4/src/main/java/com/linecorp/armeria/testing/junit4/server/ServerRule.java