@if (routerLink) {
  <button class="adf-navbar-item-btn"
    [routerLink]="routerLink"
    routerLinkActive="adf-navbar-item-active"
    mat-button>{{ label }}
  </button>
} @else {
  <button class="adf-navbar-item-btn" mat-button>
    {{ label }}
  </button>
}