code: public static synchronized void multipart(HttpString method, String url, HttpConsumer<MultipartExchange> endpoint) {
          multipart(method, url, endpoint, -1);
      }
docs: Define a endpoint that accepts a specialized {@link Exchange} to handle multipart requests. The data is parsed eagerly.
  
  @param method   The Http method for this endpoint.
  @param url      The relative URL to be map this endpoint.
  @param endpoint The endpoint handler