public void addToRootBone(Bone bone) {
        addBone(bone);
        while (bone.getParent() != null) {
            bone = bone.getParent();
            addBone(bone);
        }
    }
Add bones to be influenced by this animation channel starting from the
given bone and going toward the root bone.

@param bone the Bone to use as a starting point
jme3-core/src/main/java/com/jme3/animation/AnimChannel.java