code: function (obj, count, index) {
      if (obj) {
        if (typeof index !== 'undefined') {
          return obj.columnLabel(index);
        }
        else {
          var headers = [];
          for (var i = 0; i < count; i++) {
            headers.push(obj.columnLabel(i));
          }
          return headers;
        }
      }
    }
docs: Returns headers (if they are enabled)
  @param {Object} obj Instance of rowHeader or colHeader
  @param {Number} count Number of rows or cols
  @param {Number} index (Optional) Will return only header at given index
  @return {Array|String}