code: function(event, address) {
          var columnModel = this.columnModel.getColumnModel(address.columnName);
          var eventType, editOptions, handler;
  
          if (!columnModel) {
              return;
          }
  
          eventType = event.type;
          editOptions = columnModel.editOptions || {};
          handler = editOptions[getEventHandlerName(eventType)];
  
          if (_.isFunction(handler)) {
              handler.call(event.target, event, address);
          }
      }
docs: Executes the custom handler (defined by user) of the input events.
  @param {Event} event - DOM Event object
  @param {{rowKey:String, columnName:String}} address - cell address