addGroupAdmins method Null safety

Future<void> addGroupAdmins(
  1. {required String? groupId,
  2. required List<String>? usernames,
  3. String? appKey}
)

Implementation

Future<void> addGroupAdmins({
  required String? groupId,
  required List<String>? usernames,
  String? appKey,
}) async {
  await _channel.invokeMethod(
      'addGroupAdmins',
      {'groupId': groupId, 'usernames': usernames, 'appKey': appKey}
        ..removeWhere((key, value) => value == null));
  return;
}