returnScaffold(      appBar:AppBar(        title:Text('Example'),      ),//If you want to show body behind the navbar, it should be true      extendBody:true,      bottomNavigationBar:FloatingNavbar(        onTap: (int val) {//returns tab id which is user tapped        },        currentIndex:0,        items: [FloatingNavbarItem(icon:Icons.home, title:'Home'),FloatingNavbarItem(icon:Icons.explore, title:'Explore'),FloatingNavbarItem(icon:Icons.chat_bubble_outline, title:'Chats'),FloatingNavbarItem(icon:Icons.settings, title:'Settings'),        ],      ),    );