public AcousticInstrument(MusicInstrument instrument)
: base(instrument)
{
}
public bool SetInstrument(MusicInstrument instrument)
{
_instrument = instrument;
return(true);
}
public ElectroInstrument(MusicInstrument instrument) : base(instrument)
{
}
public Decorator(MusicInstrument instrument)
{
_instrument = instrument;
}