private void constructSkeletons() {
        FbxNode fbxRoot = (FbxNode) objectMap.get(FbxId.ROOT);
        FbxNode.createSkeletons(fbxRoot);
    }
Updates world transforms and bind poses for the FBX scene graph.
jme3-plugins/src/fbx/java/com/jme3/scene/plugins/fbx/FbxLoader.java