assertEquals(5, p1.getNumCtorHits());
Provider2 p2 = new Provider2();
assertEquals(3, p2.getNumCtorHits());
Provider3 p3 = new Provider3();
assertEquals(2, p3.getNumCtorHits());
Provider4 p4 = new Provider4();
assertEquals(2, p4.getNumCtorHits());
// to actually inspect the list in the 'data' object in the MessageBodyReaders in the ProvidersRegistry would take a lot of