Function
provideContent
Android
```kotlin
public suspend fun GlanceAppWidget.provideContent(
content: @Composable @GlanceComposable () -> Unit
): Nothing
```
Provides `content` to the Glance host, suspending until the Glance session is shut down.
If this function is called concurrently with itself, the previous call will throw
`CancellationException` and the new content will replace it. This function should only be called
from `GlanceAppWidget.provideGlance`.
TODO: make this a protected member once b/206013293 is fixed.