public Game Update(GameStatus newStatus, IReadOnlyCollection <PlayEvent> newActions, DateTimeOffset updatedAt)
{
var newHistory = History.Concat(newActions).ToList();
return(new Game(newStatus, newHistory, updatedAt));
}
private Game(GameStatus status, IReadOnlyCollection <PlayEvent> history, DateTimeOffset lastUpdated)
{
Status = status;
History = history;
LastUpdated = DateTimeOffset.Now;
}