docs: function coerceQueryParamsToString(queryParams) {
      for (var key in queryParams) {
        if (typeof queryParams[key] === 'number') {
          queryParams[key] = '' + queryParams[key];
        } else if (isArray(queryParams[key])) {
          for (var i = 0, l = queryParams[key].length; i < l; i++) {
            queryParams[key][i] = '' + queryParams[key][i];
          }
        }
      }
    }