public void addFromRootBone(Bone bone) {
        addBone(bone);
        if (bone.getChildren() == null)
            return;
        for (Bone childBone : bone.getChildren()) {
            addBone(childBone);
            addFromRootBone(childBone);
        }
    }
Add bones to be influenced by this animation channel, starting
from the given bone and going toward its children.

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