code: function Bid(statusCode, bidRequest) {
    var _bidSrc = (bidRequest && bidRequest.src) || 'client';
    var _statusCode = statusCode || 0;
  
    this.bidderCode = (bidRequest && bidRequest.bidder) || '';
    this.width = 0;
    this.height = 0;
    this.statusMessage = _getStatus();
    this.adId = utils.getUniqueIdentifierStr();
    this.requestId = bidRequest && bidRequest.bidId;
    this.mediaType = 'banner';
    this.source = _bidSrc;
  
    function _getStatus() {
      switch (_statusCode) {
        case 0:
          return 'Pending';
        case 1:
          return 'Bid available';
        case 2:
          return 'Bid returned empty or error response';
        case 3:
          return 'Bid timed out';
      }
    }
  
    this.getStatusCode = function () {
      return _statusCode;
    };
  
    // returns the size of the bid creative. Concatenation of width and height by ‘x’.
    this.getSize = function () {
      return this.width + 'x' + this.height;
    };
  }
docs: Required paramaters
  bidderCode,
  height,
  width,
  statusCode
  Optional paramaters
  adId,
  cpm,
  ad,
  adUrl,
  dealId,
  priceKeyString;