/// <summary> /// Adds current user to a Group with given group name. /// </summary> /// <param name="groupName"> /// Name of group which should be joined. /// </param> /// <returns></returns> public override async Task <string> JoinGroup(string groupName) { var user = await _manager.GetUser(connectionId : Context.ConnectionId); await this._manager.JoinGroup(user, groupName); return(groupName); }