btMultiBodyPoint2Point(btMultiBody* bodyA, int linkA, btMultiBody* bodyB, int linkB, ref btVector3 pivotInA, ref btVector3 pivotInB);
	btMultiBodyPoint2Point(btMultiBody* body, int link, btRigidBody bodyB, ref btVector3 pivotInA, ref btVector3 pivotInB);
	virtual void	removeMultiBody(btMultiBody* body);
	virtual void	addMultiBody(btMultiBody* body, short group= btBroadphaseProxy::DefaultFilter, short mask=btBroadphaseProxy::AllFilter);
	btMultiBodyJointLimitConstraint(btMultiBody* body, int link, double lower, double upper);
	btMultiBodyJointMotor(btMultiBody* body, int link, int linkDoF, double desiredVelocity, double maxMotorImpulse);