public Set<ContentPack> loadAll() {
        final DBCursor<ContentPack> contentPacks = dbCollection.find();
        return ImmutableSet.copyOf((Iterable<ContentPack>) contentPacks);
    }
@Test
    @MongoDBFixtures("ContentPackPersistenceServiceTest.json")
    public void loadAll() {
        final Set<ContentPack> contentPacks = contentPackPersistenceService.loadAll();

        assertThat(contentPacks)
                .hasSize(5);
    }