code: function(address, value) {
          var columnModel = this.columnModel.getColumnModel(address.columnName);
  
          if (_.isString(value)) {
              value = $.trim(value);
          }
          if (columnModel.validation && columnModel.validation.dataType === 'number') {
              value = convertToNumber(value);
          }
          if (columnModel.name === '_button') {
              if (value) {
                  this.dataModel.check(address.rowKey);
              } else {
                  this.dataModel.uncheck(address.rowKey);
              }
          } else {
              this.dataModel.setValue(address.rowKey, address.columnName, value);
          }
      }
docs: Sets the value of the given cell.
  @param {{rowKey:String, columnName:String}} address - cell address
  @param {(Number|String|Boolean)} value - value