getKeys method

@override Future<List<String>> getKeys()

Returns all keys.

Implementation

@override
Future<List<String>> getKeys() async {
  final keys = <String>[];
  for (var i = 0; i < _storage.length; i++) {
    final key = _storage.key(i);
    if (key != null) {
      keys.add(key);
    }
  }
  return keys;
}