new UnresolvedPrincipal("a.b.c", "YYY"),
new UnresolvedPrincipal("a.b.c", "XXX"),
new UnresolvedPrincipal("e.f.g", "ZZZ") };
assertTrue(pe.impliesPrincipals(null));
assertTrue(pe.impliesPrincipals(pp1));
pe = new PolicyEntry(null, new HashSet(), null);
assertTrue(pe.impliesPrincipals(pp3));
pe = new PolicyEntry(null, Arrays.asList(pp2), null);