getValue method
Implementation
Future<String?> getValue(String atsign, String key) async {
var value;
try {
assert(atsign != '');
value = await FlutterKeychain.get(key: atsign + ':' + key);
} on Exception catch (e) {
_logger.severe(
'flutter keychain - exception in get value for $key :${e.toString()}');
}
return value;
}