nebular - 从窗口组件获取响应

Question

我尝试从 WindowComponent（子）向父组件发送响应，onClose observable 应该返回一个 observable，但我将它设置为返回它并且它不起作用

// parent component

this.windowService
        .open(WindowFormEditDocumentComponent, {
          title: `Edit Document`,
          context: {
            formId: this.selection.selected[0]["formId"],
            id: this.selection.selected[0]["_id"],
            recipient: this.selection.selected[0]["recipient"],
          },
          windowClass: "background",
        })
        .onClose.subscribe((data) => {
          console.log("aquiv", data); // undefined
        });

---

// child component

    closed$ = new Subject();
    get onClose() {
     return this.closed$.asObservable();
   }


     this.closed$.next("test");

https://akveo.github.io/nebular/docs/components/dialog/api#nbdialogservice