assertTrue(iri1.normalize().equals(iri2.normalize()));
assertTrue(iri1.normalize().equals(iri3.normalize()));
assertTrue(iri2.normalize().equals(iri1.normalize()));
assertTrue(iri2.normalize().equals(iri3.normalize()));
assertTrue(iri3.normalize().equals(iri1.normalize()));
assertTrue(iri3.normalize().equals(iri2.normalize()));
assertTrue(iri1.equivalent(iri2));
assertTrue(iri1.equivalent(iri3));
assertTrue(iri2.equivalent(iri1));
assertTrue(iri2.equivalent(iri3));