Do not have deep copy function for CCSprite in Cocos2d-x?

cocos2d-x C++
#1

I inherit CCSprite class for character

so I make a class MasterTarget

class MasterTarget : public CCSprite
{
public:
MasterTarget();
MasterTarget(MasterTarget &pOrigin);
virtual ~MasterTarget();
};

MasterTarget::MasterTarget(MasterTarget &pOrigin) : CCSprite( pOrigin )
{
}

but I can’t find any way for deep copy in CCSprite class.

please help me and give a any answer and any clue.