showM3MessageDialog
fun Activity.showM3MessageDialog(message: String, positiveTextId: Int, onPositive: () -> Unit, titleId: Int = 0, titleText: String = "", negativeTextId: Int = 0, onNegative: () -> Unit? = null, cancelable: Boolean = true): AlertDialog
ponytail: M3 card shell — migrate dialogs here from setupDialogStuff incrementally