code: function (validBidRequests, bidderRequest) {
      const url = bidderRequest.refererInfo.referer;
      let requests = [];
      utils._each(validBidRequests, function(bid) {
        requests.push({
          method: 'GET',
          url: ENDPOINT_URL,
          data: {
            regionId: bid.params.regionId,
            dt: getDeviceType(),
            os: getOS(),
            ref: extractDomain(url),
            _: (new Date().getTime()),
            mobile_web: 1
          },
          bidId: bid.bidId
        });
      });
      return requests;
    }
docs: Make a server request from the list of BidRequests.
  
  @param {validBidRequests[]} - an array of bids
  @return ServerRequest Info describing the request to the server.