docs: private static void handlePing(final Channel channel, final ManagementProtocolHeader header) throws IOException {
          final ManagementProtocolHeader response = new ManagementPongHeader(header.getVersion());
          final MessageOutputStream output = channel.writeMessage();
          try {
              writeHeader(response, output);
              output.close();
          } finally {
              StreamUtils.safeClose(output);
          }
      }