Retrieve a list of all members in a group channel

By using the members property, you can retrieve a list of all members in a group channel.

std::vector<SBDMember> members = groupChannel->members;

Members of a group channel are automatically updated when a user is online. But if a user is disconnected from the Sendbird server and then reconnected, you should call the RefreshChannel() method to update the latest information of all users in the group channel.