code: function (event) {
              if (this._cfg.autoFill && event.domEvent) {
                  // Closing the dropdown after typing is not a domEvent
                  var value = this.controller.getDataModel().value;
                  if (value != null) {
                      var report = this.controller.checkDropdownValue(value);
                      this._reactToControllerReport(report);
                  }
              }
          }
docs: React to a dropdown close. If the widget is using autofill we want to select the pre-selected value in the
  datamodel and report it to the input field also when the user clicks away from the field instead of
  navigating through TAB or selecting an item from the dropdown. This function is called any time we close the
  dropdown, even when typing there are no results.
  @param {Object} event Event that triggered this callback
  @private