public float kinematicWeight() {
        assert kinematicWeight >= 0f : kinematicWeight;
        assert kinematicWeight <= 1f : kinematicWeight;
        return kinematicWeight;
    }
Read the kinematic weight of this link.

@return 0 if purely dynamic, 1 if purely kinematic
jme3-jbullet/src/main/java/com/jme3/bullet/animation/PhysicsLink.java