Source documentation often mentions "Example usage: @sample androidx.ui.layout.samples.#####" Are these samples available publicly somewhere?

The samples are used to generate code snippets on the public documentation, such as here: https://developer.android.com/reference/kotlin/androidx/ui/material/package-summary.html#TopAppBar(kotlin.Function0,%20androidx.ui.graphics.Color,%20kotlin.Function0) So you can either find the corresponding developer.android page, or look for the corresponding sample in the source code: https://cs.android.com/androidx We are investigating embedding the samples though, so in the future hopefully you will be able to just click through straight to the samples, and they will display in Studio 🙂

That's great, thanks!