public void AddInstrument(string serialNumber, double price, InstrumentSpec spec) //Builder builder, string model, Type type, Wood backwood, Wood topwood)
{
Instrument instrument = null;
if (spec.GetType() == typeof(GuitarSpec))
{
instrument = new Guitar(serialNumber, price, (GuitarSpec)spec);
}
else if (spec.GetType() == typeof(MandolinSpec))
{
instrument = new Mandolin(serialNumber, price, (MandolinSpec)spec);
}
instruments.Add(instrument);
}
public void AddGuitar(string serialno, double price, GuitarSpec spec)
{
Guitar guitar = new Guitar(serialno, price, spec);
guitars.Add(guitar);
}