}
@Test
public void testHashCodeDataFunctionalData() {
OWLDataProperty prop = DP(IRI());
OWLPropertyAxiom axA = testSubject
.getOWLFunctionalDataPropertyAxiom(prop);
OWLPropertyAxiom axB = testSubject
.getOWLFunctionalDataPropertyAxiom(prop);
assertEquals(axA.hashCode(), axB.hashCode());
}