如何获取ngb-accordion的打开/关闭状态

import { Component, ViewChild } from '@angular/core';
import { NgbAccordion, NgbPanel } from '@ng-bootstrap/ng-bootstrap';

@Component({
  selector: 'app-example',
  template: `
    <ngb-accordion #accordion="ngbAccordion">
      <ngb-panel #panel1="ngbPanel" [title]="'Panel 1'">
        <ng-template ngbPanelContent>
          Panel 1 content
        </ng-template>
      </ngb-panel>
    </ngb-accordion>
  `
})
export class ExampleComponent {
  @ViewChild('accordion', { static: true }) accordion: NgbAccordion;
  @ViewChild('panel1', { static: true }) panel1: NgbPanel;

  getPanel1Status() {
    return this.panel1.isExpanded;
  }
}

import { Component } from '@angular/core';
import { NgbAccordion } from '@ng-bootstrap/ng-bootstrap';

@Component({
  selector: 'app-example',
  template: `
    <ngb-accordion #accordion="ngbAccordion">
      <ngb-panel [title]="'Panel 1'" id="panel1">
        <ng-template ngbPanelContent>
          Panel 1 content
        </ng-template>
      </ngb-panel>
    </ngb-accordion>

    <button (click)="getAccordionStatus()">Get Accordion Status</button>
  `
})
export class ExampleComponent {
  constructor(private accordion: NgbAccordion) {}

  getAccordionStatus() {
    const activeIds = this.accordion.activeIds;
    // 根据activeIds数组的内容，可以判断面板的打开/关闭状态
  }
}