isSilenceMember method
Implementation
Future<bool> isSilenceMember({
required String? groupId,
required String? username,
String? appKey,
}) async {
Map resJson = await _channel.invokeMethod(
'isSilenceMember',
{
'groupId': groupId,
'username': username,
'appKey': appKey,
}..removeWhere((key, value) => value == null));
return resJson['isSilence'];
}