static ngTemplateContextGuard<T, U extends NgIterable<T>>(dir: NgForOf<T, U>, ctx: any): ctx is NgForOfContext<T, U>
<div class = "CirclePoint" *ngFor="let c of circles"
[attr.id]="'Location' + c.id">
</div>
<div class = "CirclePoint" *ngFor="let c of circles"
attr.id="Location{{c.id}}">
</div>