*
* @param isNilExpected {@code true} if the identification info is expected to be a {@link NilObject} instance.
* @param metadata The metadata to verify.
*/
private static void verify(final boolean isNilExpected, final DefaultMetadata metadata) {
final Identification identification = getSingleton(metadata.getIdentificationInfo());
assertEquals("NilObject", isNilExpected, identification instanceof NilObject);
assertInstanceOf("Identification", IdentifiedObject.class, identification);
final XLink xlink = ((IdentifiedObject) identification).getIdentifierMap().getSpecialized(IdentifierSpace.XLINK);
assertEquals("xlink:href", "http://test.net", xlink.getHRef().toString());
}