title: How to hide bottom tab navigator (persistent_bottom_nav_bar) when the screen is not the main screens-Flutter
body: <p>I am currently using <code>persistent_bottom_nav_bar: ^4.0.2</code> package of flutter which showing 3 screens (A,B,C screens) in the bottom tab navigator. In the first screen I have a button that navigate user to another screen (D screen). The problem is the bottom tab navigator (persistent_bottom_nav_bar) is still showing in D screen, while the main screens are AB,C. Is there a way to hide persistent_bottom_nav_bar when the screen is not one of three main screen ?</p>