Angular 有 let-name 指令吗?

Does Angular have a let-name directive?

this article 中,作者在模板上使用了 let-name 指令,如下所示:

<ng-template #testTemplate let-name>
   <div>User {{ name }} </div>        
</ng-template>`

那是 angular/coreangular/cdk 指令的一部分还是作者发明的东西?

来自Angular Docs

The Angular microsyntax lets you configure a directive in a compact, friendly string. The microsyntax parser translates that string into attributes on the <ng-template>

例如,Angular 中的微语法允许您编写

<div *ngFor="let item of items">{{item}}</div>

而不是

<ng-template ngFor let-item [ngForOf]="items"><div>{{item}}</div></ng-template>.