private RoomsViewModel GetUserRooms(User user)
{
string homeserverUrl = "https://matrix.org";
MatrixClient client;
string username = user.Username;
string password = user.Password;
client = new MatrixClient(homeserverUrl);
MatrixLoginResponse login = client.LoginWithPassword(username, password);
client.StartSync();
RoomsViewModel rmv = new RoomsViewModel();
rmv.rooms = client.GetAllRooms();
return(rmv);
}