docs: function normalizeControllerQueryParams(queryParams) {
      if (queryParams._qpMap) {
        return queryParams._qpMap;
      }
  
      var qpMap = queryParams._qpMap = {};
  
      for (var i = 0, len = queryParams.length; i < len; ++i) {
        accumulateQueryParamDescriptors(queryParams[i], qpMap);
      }
  
      return qpMap;
    }