}
@Test
public void stackingIdByAttribute() throws Exception {
pool.addProductAttribute(new ProductPoolAttribute("stacking_id", "3456", "p"));
certServiceAdapter.createX509Certificate(entitlement,
product, new HashSet<Product>(), new BigInteger("1234"), keyPair(), true);
verify(mockedPKI).createX509Certificate(any(String.class),
argThat(new ListContainsStackingId("3456")), any(Set.class), any(Date.class),