refactor: apply Sayantan's suggestion again

     * or stop to support an old one

     */

    private fun getAndroidVersionCodeChar(): String {

        val baseAPI = Build.VERSION_CODES.BASE

        val lastUnsupportedAPI = Build.VERSION_CODES.R

        return when (val currentAPI = Build.VERSION.SDK_INT) {

            in baseAPI.. lastUnsupportedAPI -> throw UnsupportedAndroidApiException("Android $currentAPI is not supported anymore")

            Build.VERSION_CODES.S -> "S"

            Build.VERSION_CODES.TIRAMISU -> "T"

            else -> throw UnsupportedAndroidApiException("Android $currentAPI and above is not yet supported")

            else -> throw UnsupportedAndroidApiException("API level $currentAPI is not supported")

        }

    }