private void attachTestObject(Mesh mesh, Vector3f position, float mass) {
        Material material = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
        Geometry g = new Geometry("mesh", mesh);
        g.setLocalTranslation(position);
        g.setMaterial(material);

        RigidBodyControl control = new RigidBodyControl(new GImpactCollisionShape(mesh), mass);
        g.addControl(control);
        addObject(g);
    }
Test demonstrating a GImpactCollisionShape falling through a curved mesh, when using JBullet. Bullet native
does not experience this issue at the time this test was created.

@author lou
jme3-examples/src/main/java/jme3test/bullet/TestIssue1120.java