private void assertNotOwned(Location loc) {
   NamedStringTag ownerEntityTag =
       BrooklynTags.findFirst(BrooklynTags.OWNER_ENTITY_ID, loc.tags().getTags());
   Assert.assertNull(ownerEntityTag);
 }
 private void assertOwned(BasicApplication app, Location loc) {
   NamedStringTag ownerEntityTag =
       BrooklynTags.findFirst(BrooklynTags.OWNER_ENTITY_ID, loc.tags().getTags());
   Assert.assertNotNull(ownerEntityTag);
   Assert.assertEquals(ownerEntityTag.getContents(), app.getId());
 }