@Test
public void testFromJsonString() {

	TwistStamped p = TwistStamped.fromJsonString(t1.toString());
	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());
}