title: Disable default selected tab
body: <p>I'm using <a href="https://github.com/roughike/BottomBar/tree/v1" rel="nofollow">BottomBar</a> library for Material design <a href="https://material.google.com/components/bottom-navigation.html" rel="nofollow">Bottom navigation</a> and the problem is that its selecting first item by default and there is no any function or option to disable default selection.</p>
  
  <p>How can I disable default selection?</p>