redoc/lib/components/SideMenu/side-menu.html

<h2 class="menu-header"> Api reference </h2>
<div *ngFor="var cat of data.menu; #idx = index" class="menu-cat">

  <label class="menu-cat-header" (click)="activateAndScroll(idx, -1)" [ngClass]="{active: cat.active}"> {{cat.name}}</label>
  <ul class="menu-subitems" [ngClass]="{active: cat.active}">
    <li *ngFor="var method of cat.methods; var methIdx = index"
      [ngClass]="{active: method.active}"
      (click)="activateAndScroll(idx, methIdx)">
      {{method.summary}}
    </li>
  </ul>

</div>