Pagination Event only called on certain interaction?

[ysk3a]

I think this might be a feature request as well if this does not exist but I was playing around with paging to see how reactive and dynamic i could make it but i've noticed that only on page input box or page buttons emit the change events.
So when i want to dynamically change [nzPageIndex]="nzPageIndex" [nzTotal]="nzTotal" [nzPageSize]="nzPageSize" the change events are not emitted as shown in this demo:
https://stackblitz.com/edit/xydair?file=src%2Fapp%2Fapp.component.ts%2Csrc%2Fapp%2Fapp.config.ts

clicking on any of the

    <button (click)="changePage()">Random Page</button>
    <button (click)="goToOne()">go to 1</button>
    <button (click)="changeSize()">change size</button>

does not cause change to emit.

I'm not sure if this is intended or if this could be an acceptable feature request.