*/
private void doOnlyFreshPrefixes()
{
final String newURI = "abc:def/";
final Graph g = Factory.createDefaultGraph();
final PrefixMapping pm = g.getPrefixMapping();
pm.setNsPrefix(TestModelPrefixMapping.alphaPrefix, newURI);
final Model m = ModelFactory.createModelForGraph(g);
Assert.assertEquals(newURI,
m.getNsPrefixURI(TestModelPrefixMapping.alphaPrefix));
Assert.assertEquals(TestModelPrefixMapping.betaURI,
m.getNsPrefixURI(TestModelPrefixMapping.betaPrefix));