getLocationAge in Kotlin

@SuppressLint("NewApi")
private fun getLocationAge(newLocation: Location): Long {
    val locationAge: Long
    if (android.os.Build.VERSION.SDK_INT >= 17) {
        val currentTimeInMilli = SystemClock.elapsedRealtimeNanos() / 1000000
        val locationTimeInMilli = newLocation.elapsedRealtimeNanos / 1000000
        locationAge = currentTimeInMilli - locationTimeInMilli
    } else {
        locationAge = System.currentTimeMillis() - newLocation.time
    }
    return locationAge
}