angular - ng-template for complex labels in md-tab material2 -

i using material2 md-tab. per documentation if want give more complex label tab headers need use ng-template md-tab-label. want know strategy why have chosen ng-template way? isn't there should

<md-tab-label>complex label</md-tab-label> 

like other material components md-card have defined <md-card-title> , <md-card-subtitle>

you should use md-menu instead of md-tab. because tab bar not used purpose:

app.component.ts:

import {component} '@angular/core';   @component({   selector: 'menu-overview-example',   templateurl: 'menu-overview-example.html', }) export class menuoverviewexample {} 

<button md-button [mdmenutriggerfor]="menu">menu</button> <md-menu #menu="mdmenu">   <button md-menu-item>item 1</button>   <button md-menu-item>item 2</button> </md-menu>