@Override
    public void write(JmeExporter e) throws IOException {
        SafeArrayList<Spatial> childList = children;
        children = new SafeArrayList<>(Spatial.class);
        super.write(e);
        OutputCapsule capsule = e.getCapsule(this);
        capsule.writeSavableArrayList(assetLoaderKeys, "assetLoaderKeyList", null);
        children = childList;
    }
Loads the linked children AssetKeys from the AssetManager and attaches them to the Node<br>
If they are already attached, they will be reloaded.

@param manager for loading assets
jme3-core/src/main/java/com/jme3/scene/AssetLinkNode.java