public Mantle(IDrillBit drillBit, ILayer nextLayer) { _drillBit = drillBit; _nextLayer = nextLayer; }
public Core(IDrillBit drillBit) { _drillBit = drillBit; }
public Crust(IDrillBit drillBit, ILayer nextLayer) { _drillBit = drillBit; _nextLayer = nextLayer; }