This is an example of how to implement navigation in a multi-module project.
๐ฌ๐ง Navigation in Multi-Modules Projects
๐ฌ๐ง Navigation in Multi-Module Projects - ProAndroidDev
๐ฌ๐ง Navigation in Multi-Module Projects - Habr
๐ฌ๐ง Navigation in Multi-Module Projects Talk @ Droidcon Vienna 2019