Android Store LocalDateTime in SharedPreferences

val milliseconds = sharedPref.getLong(key, 0)val localDateTime = if (milliseconds == 0L) null else LocalDateTime.ofInstant(Instant.ofEpochMilli(milliseconds), ZoneOffset.UTC)

val milliseconds = localDateTime?.atZone(ZoneOffset.UTC)?.toInstant()?.toEpochMilli() ?: 0sharedPref.edit {    putLong(key, milliseconds)}