title: Android Navigation Component how to open new fragment without adding it to backStack?
body: <p>I am doing navigation using the Navigation Component (JetPack). I want to open a new fragment R.id.twoFragment with:</p>
  <pre><code>navController.navigate(R.id.twoFragment)
  </code></pre>
  <p>But I need the R.id.twoFragment not to get into the backStack. How can I do that?</p>