code: function(){
          var fieldNames = [], i, n = this._fieldCount;
          for (i = 0; i < n; i++) fieldNames[i] = this.fieldOrder[i];
          return fieldNames;
      }
docs: Retrieve an array of field names.
  The position of the names in the array corresponds to the column order of the rowset.
  
  @method getFieldNames
  @return {[string]} An (ordered) array of field names.