code: function() {
          var columnWidths = this.coordColumnModel.getWidths(this.whichSide);
          var $colList = this.$el.find('col');
          var coordRowModel = this.coordRowModel;
  
          _.each(columnWidths, function(columnWidth, index) {
              $colList.eq(index).css('width', columnWidth + CELL_BORDER_WIDTH);
          });
  
          // Calls syncWithDom only from the Rside to prevent calling twice.
          // Defered call to ensure that the execution occurs after both sides are rendered.
          if (this.whichSide === frameConst.R) {
              _.defer(function() {
                  coordRowModel.syncWithDom();
              });
          }
      }
docs: column width 변경시 col 엘리먼트들을 조작하기 위한 헨들러
  @private