private async Task GetRooms()
        {
            var rooms = await rocketChatRest.GetRooms();

            Channels            = new ObservableCollection <Room>(rooms.Where(x => x is Channel).ToList());
            DirectConversations = new ObservableCollection <Room>(rooms.Where(x => x is DirectConversation).ToList());
            foreach (var conversation in DirectConversations)
            {
                var conversationCasted = conversation as DirectConversation;
                var userId             = conversationCasted.UserIds.FirstOrDefault(x => x != LoggedUser.Id);
                conversationCasted.User   = Users.FirstOrDefault(x => x.Id == userId);
                conversationCasted.Name   = conversationCasted.User.Username;
                conversationCasted.Avatar = conversationCasted.User.Avatar;
            }
            Discussions   = new ObservableCollection <Room>(rooms.Where(x => x is Discussion).ToList());
            PrivateGroups = new ObservableCollection <Room>(rooms.Where(x => x is PrivateGroup).ToList());
        }