}

        @Override
        public Map<String, List<String>> getHeaderFields() {
            return Collections.emptyMap();
        }

        @Override
        public void addRequestProperty(String key, String value) {
            requestProperties.computeIfAbsent(key, k -> new ArrayList<>()).add(value);
        }

        @Override

                if (headerList != null) {
                    for (final String[] values : headerList) {
                        logger.fine(() -> ">>> " + values[0] + "=" + values[1]);
                        connection.addRequestProperty(values[0], values[1]);
                    }
                }
                if (compression != null) {
                    connection.setRequestProperty("Accept-Encoding", compression);
                }