Set Height TabBar

Flutter - how can i set the height of a TabBar?Stack Overflow

DefaultTabController(
      length: 2,
      child: Scaffold(
        appBar: PreferredSize(
          preferredSize: Size.fromHeight(150.0),
          child: AppBar(
            bottom: TabBar(
              tabs: <Widget>[
                Text('Tab 1'),
                Text('Tab 2'),
              ],
            ),
          ),
        ),
        body: TabBarView(
          children: <Widget>[
            Icon(Icons.apps),
            Icon(Icons.apps),
          ],
        ),
      ),
    )