@Override
            public InputStream openStream() {
                return new ByteArrayInputStream(baos.toByteArray());
            }
Test case for JME issue #970: RigidBodyControl doesn't read/write velocities.
Clone a body that implements Control by saving and then loading it.
jme3-jbullet/src/test/java/com/jme3/jbullet/test/PreventBulletIssueRegressions.java