class ResponseBuilderImpl extends ResponseBuilder implements Cloneable {

    @Override
    public ResponseBuilder variant(Variant variant) {
        type(variant == null ? null : variant.getMediaType());
        language(variant == null ? null : variant.getLanguage());
        setHeader(HttpHeaders.CONTENT_ENCODING, variant == null ? null : variant.getEncoding());
        return this;
    }

    public  ResponseBuilderImpl();
    private  ResponseBuilderImpl(ResponseBuilderImpl copy);

}