@Test(expected = WrongReferenceAttributeValueException.class)
public void testMissingReqAttribute() throws Exception {

	System.out.println("testMissingReqAttribute()");
	attributeToCheck.setValue(Collections.singletonList("08:50"));
	syncInterval.setValue("true");
	classInstance.checkAttributeSemantics(sess, group, attributeToCheck);
}