@Test
public void testFromJsonObject() {

	JsonObject jsonObject = Json.createObjectBuilder()
			.add(TwistStamped.FIELD_HEADER, t1.getHeader().toJsonObject())
			.add(TwistStamped.FIELD_TWIST, t1.getTwist().toJsonObject())
			.build();
	TwistStamped p = TwistStamped.fromJsonObject(jsonObject);
	assertEquals(t1.toString(), p.toString());
	assertEquals(t1.toJsonObject(), p.toJsonObject());
	assertEquals(t1.getMessageType(), p.getMessageType());
	assertEquals(t1.getHeader(), p.getHeader());
	assertEquals(t1.getTwist(), p.getTwist());
	assertNotSame(t1, p);
	assertNotSame(t1.toString(), p.toString());
	assertNotSame(t1.toJsonObject(), p.toJsonObject());
}