docs: public Entry createFolder(String path) {
          OAuthRequest request = new OAuthRequest(Verb.GET, FILE_OPS_CREATE_FOLDER_URL);
          request.addQuerystringParameter("root", "dropbox");
          request.addQuerystringParameter("path", encode(path));
  
          service.signRequest(accessToken, request);
          String content = checkCreateFolder(request.send()).getBody();
  
          return Json.parse(content, Entry.class);
      }