public Frame Roll(uint pins)
{
if (IsFull)
{
if (NextFrame != null)
{
return(NextFrame.Roll(pins));
}
return(null);
}
if (!IsValidRoll(pins))
{
throw new InvalidRollException($"Invalid roll > {MaxValidRoll}");
}
var roll = new Roll(pins);
Rolls.Add(roll);
if (IsFull)
{
return(NextFrame);
}
return(this);
}