class HttpHeadersImpl implements HttpHeaders {

    @Override
    public MultivaluedMap<String, String> getRequestHeaders() {
        MultivaluedHashMap<String, String> newHeaders =
                new MultivaluedHashMap<>();
        for (Map.Entry<String, String> headerEntry : nettyHttpHeaders.entries()) {
            if (headerEntry != null) {
                newHeaders.add(headerEntry.getKey(), headerEntry.getValue());
            }
        }
        return newHeaders;
    }

    public  HttpHeadersImpl(io.netty.handler.codec.http.HttpHeaders httpHeaders);

}