@Test
public void shouldSearchDataProperties()
throws OWLOntologyCreationException {
// given
OWLOntology o = m.createOntology();
OWLDataProperty c = DataProperty(IRI("urn:c"));
OWLDataProperty d = DataProperty(IRI("urn:d"));
OWLDataProperty e = DataProperty(IRI("urn:e"));
OWLAxiom ax = SubDataPropertyOf(c, d);
OWLClass x = Class(IRI("urn:x"));
OWLAxiom ax2 = DataPropertyDomain(c, x);
OWLAxiom ax3 = DataPropertyRange(c, Boolean());
OWLAxiom ax4 = EquivalentDataProperties(c, e);