verifyTokenFetch(fs1, true);
verifyTokenFetch(fs2, false); // we had added its token to credentials
verifyTokenFetch(fs3, false); // has no tokens
verifyTokenFetch(fs4, true);
assertEquals(4, credentials.numberOfTokens()); //fs1+fs2+fs4+multifs (fs3=0)
assertNotNull(credentials.getToken(service1));
assertNotNull(credentials.getToken(service2));
assertSame(token2, credentials.getToken(service2));
assertNotNull(credentials.getToken(multiService));
assertNotNull(credentials.getToken(service4));