}
@Test
public void testHashCodeObjectIrreflexive() {
OWLObjectProperty prop = OP(IRI());
OWLPropertyAxiom axA = testSubject
.getOWLIrreflexiveObjectPropertyAxiom(prop);
OWLPropertyAxiom axB = testSubject
.getOWLIrreflexiveObjectPropertyAxiom(prop);
assertEquals(axA.hashCode(), axB.hashCode());
}