docs: public static boolean requiresContinueResponse(final HttpServerExchange exchange) {
          if (!COMPATIBLE_PROTOCOLS.contains(exchange.getProtocol()) || exchange.isResponseStarted() || !exchange.getConnection().isContinueResponseSupported() || exchange.getAttachment(ALREADY_SENT) != null) {
              return false;
          }
  
          HeaderMap requestHeaders = exchange.getRequestHeaders();
          return requiresContinueResponse(requestHeaders);
      }