// <library> is understood in all android versions whereas <updatable-library> is only understood from API T (and ignored before that).
// similarly, min_device_sdk is only understood from T. So if a library is using that, we need to use the updatable-library to make sure this library is not loaded before T
// <library> is understood in all android versions whereas <apex-library> is only understood from API T (and ignored before that).
// similarly, min_device_sdk is only understood from T. So if a library is using that, we need to use the apex-library to make sure this library is not loaded before T