code: function readBodyParams(req) {
      if (req.headers['content-type'] !== 'application/x-www-form-urlencoded') {
          deprecationWarning(
              "make sure you correctly set Content-Type to" +
                  " application/x-www-form-urlencoded"
          );
  
          try {
              return qs.parse(req.rawBody.toString());
          } catch(e) {
              return null;
          }
      }
  
      return req.body;
  }
docs: /*
  This function is needed to (1) keep backwards compatibility with
  possibly-broken programs sending requests without the appropriate
  Content-Type header (and so req.body won't have the parameters sent
  in the request), while at the same time (2) not issuing a warning
  due to the use of req.bodyParams, not deprecated.