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);