setContentCompressionEnabled(true) does not work

CloseableHttpAsyncClient client = HttpAsyncClients.custom()
        .disableAuthCaching()
        .disableCookieManagement()
        .setVersionPolicy(FORCE_HTTP_1)
        .setDefaultRequestConfig(RequestConfig.custom()
                .setContentCompressionEnabled(true)
                .build())
        .build(); 

We are migrating away from old apache sync client in favor of CloseableHttpAsyncClient. However, the new async client is not respecting the client configuration of contentCompression.  The old client would call down into ProtocolExec -> httpProcessor.process(request, context) -> which would go into interceptor RequestAcceptEncoding and if you wanted compression, it would add the Accept-Encoding header.  This new client is not doing that.