code: function() {
      this.subscribe("theadCellClickEvent", this.onEventSortColumn); 	 
  
      // Backward compatibility
      var oSortedBy = this.get("sortedBy");
      if(oSortedBy) {
          if(oSortedBy.dir == "desc") {
              this._configs.sortedBy.value.dir = DT.CLASS_DESC;
          }
          else if(oSortedBy.dir == "asc") {
              this._configs.sortedBy.value.dir = DT.CLASS_ASC;
          }
      }
  }
docs: Initializes Column sorting.
  
  @method _initColumnSort
  @private