How to add a close button to NgZorro Collapse header component?

Question

I am working on NgZorro Collapse component. I have to add a close button on the top-right of the component. How to add it?

Answer 1

I got the answer:

  <nz-collapse>
      <nz-collapse-panel [nzExtra]="extraTpl">
      </nz-collapse-panel>
  </nz-collapse>
  <ng-template #extraTpl>
     <i nz-icon nzType="close" nzTheme="outline"></i>
  </ng-template>