It would be useful if all AppBar composables exposed the contentPadding parameter with a default value. An example use case is applying window insets to an AppBar (Modifier.padding doesn't work because it applies to the background as opposed to the inner content).

Currently it's only exposed by:

https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:compose/material/material/src/commonMain/kotlin/androidx/compose/material/AppBar.kt;l=149

But it's not exposed by the below variation of TopAppBar, which uses AppBarDefaults.ContentPadding directly:

https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:compose/material/material/src/commonMain/kotlin/androidx/compose/material/AppBar.kt;l=149

Please expose it as a parameter with a default value, eg.

@Composable
fun TopAppBar(
    ...
    contentPadding: PaddingValues = AppBarDefaults.ContentPadding
) {
    AppBar(
        ...
        contentPadding,
        ...
    ) {
        ...
    }
}