在角度2多选下拉列表中未触发onclose事件

Question

onclose事件未在angular 2多选下拉列表中触发

 <angular2-multiselect [data]="assetInfo['devices']" [(ngModel)]="ai_rule_engine.model_info.devices" [settings]="dropdownSettings"
                 (onClose)="getTags($event)"></angular2-multiselect>

在ts文件中：

getTags(event){
    console.log(event);
}