@SuppressWarnings("unchecked")
        @Override
        public Enumeration getHeaders(String name) {
            if ("Content-Length".equalsIgnoreCase(name)) {
                return Collections.enumeration(Collections.EMPTY_SET);
            } else if ("Content-MD5".equalsIgnoreCase(name)) {
                return Collections.enumeration(Collections.EMPTY_SET);
            } else if ("Content-Encoding".equalsIgnoreCase(name)) {
                return Collections.enumeration(Collections.EMPTY_SET);
            } else {
                return super.getHeaders(name);
            }
        }
@see jakarta.servlet.http.HttpServletRequestWrapper#getHeaders(java.lang.String)
src/nu/validator/servlet/InboundGzipFilter.java