Sample - Bottom Navigation and/or Navigation drawer

I'm looking for some backstack examples with bottom navigation or navigation drawer. I think the master/detail sample is promising, but I would like to reuse the same controllers when clicking on items instead of creating new ones. My use-case is that I want to preserve the childs within the controller item when switching between them from my navigation view.

I have read about changing the visibility of controllers, but it seems a bit fuzzy to me.

Having a sample would show best practices using Conductor for 2 commonly used navigation.

Hope that make sense!

Start by reviewing the existing master/detail sample and Conductor's controller visibility and back-stack guidance. The work is done when a sample demonstrates bottom navigation and/or a navigation drawer while reusing controllers and preserving each controller's child state when switching items.

Written by the indexing model from the issue text.