Resume instantaneously, on next zone enter or not at all?
<div mat-dialog-actions>
    <button mat-button color="color-resume-instant" (click)="instant()">Instant</button>
    <button mat-button color="color-resume-next" (click)="next()" cdkFocusInitial>Next zone</button>
    <button mat-button color="color-resume-no" (click)="discard()" cdkFocusInitial>Not at all</button>
</div>