code: function(address, shouldBlur, value) {
          var focusModel = this.focusModel;
          var row, currentValue;
  
          if (!focusModel.isEditingCell(address.rowKey, address.columnName)) {
              return false;
          }
  
          this.selectionModel.enable();
  
          if (!_.isUndefined(value)) {
              row = this.dataModel.get(address.rowKey);
              currentValue = row.get(address.columnName);
  
              if (!(util.isBlank(value) && util.isBlank(currentValue))) {
                  this.setValue(address, this._checkMaxLength(address.columnName, value));
              }
          }
          focusModel.finishEditing();
  
          if (shouldBlur) {
              focusModel.focusClipboard();
          } else {
              _.defer(function() {
                  focusModel.refreshState();
              });
          }
  
          return true;
      }
docs: Ends editing a cell identified by a given address, and returns the result.
  @param {{rowKey:String, columnName:String}} address - cell address
  @param {Boolean} shouldBlur - if set to true, make the current input lose focus.
  @param {String} [value] - if exists, set the value of the data model to this value.
  @returns {Boolean} - true if succeeded, false otherwise