private void testOldAnimationSystem(String assetPath) {
        Node oldJaime = (Node) assetManager.loadModel(assetPath);
        rootNode.attachChild(oldJaime);
        oldJaime.setLocalTranslation(-1f, 0f, 0f);

        // enable software skinning:
        SkeletonControl skeletonControl
                = oldJaime.getControl(SkeletonControl.class);
        skeletonControl.setHardwareSkinningPreferred(false);

        // remove its vertex normals:
        Geometry oldGeometry = (Geometry) oldJaime.getChild(0);
        Mesh oldMesh = oldGeometry.getMesh();
        oldMesh.clearBuffer(VertexBuffer.Type.Normal);
        oldMesh.clearBuffer(VertexBuffer.Type.BindPoseNormal);
    }
Attach the specified model (which uses the old animation system) to the
scene graph, enable software skinning, and remove its vertex normals.

@param assetPath the asset path of the test model (not null)
jme3-examples/src/main/java/jme3test/animation/TestIssue2076.java