unbanUser method Null safety

Future<void> unbanUser(
  1. {required String userId}
)

Unbans a user from this channel

Implementation

Future<void> unbanUser({required String userId}) async {
  if (userId.isEmpty) {
    throw InvalidParameterError();
  }

  await _sdk.api.send(ChannelUserUnbanRequest(
    targetId: userId,
    channelType: channelType,
    channelUrl: channelUrl,
  ));
}