// Append
	friend := *GetUser("friend", Config{})

	if err := DB.Model(&user2).Association("Friends").Append(&friend); err != nil {
		t.Fatalf("Error happened when append account, got %v", err)
	}

	user.Friends = append(user.Friends, &friend)
	CheckUser(t, user2, user)

	AssertAssociationCount(t, user, "Friends", 3, "AfterAppend")

			References: []Reference{{"ID", "User", "UserID", "UserSpeak", "", true}, {"Code", "Language", "LanguageCode", "UserSpeak", "", false}},
		},
		{
			Name: "Friends", Type: schema.Many2Many, Schema: "User", FieldSchema: "User",
			JoinTable: JoinTable{Name: "user_friends", Table: "user_friends", Fields: []schema.Field{
				{
					Name: "UserID", DBName: "user_id", BindNames: []string{"UserID"}, DataType: schema.Uint,

    Set<String> friends = Sets.newHashSet("Tom", "Joe", "Dave");
    Set<String> enemies = Sets.newHashSet("Dick", "Harry", "Tom");

    Set<String> goodFriends = Sets.difference(friends, enemies);
    assertEquals(2, goodFriends.size());

    ImmutableSet<String> immut = Sets.difference(friends, enemies).immutableCopy();
    HashSet<String> mut = Sets.difference(friends, enemies).copyInto(new HashSet<String>());

	result.Friends = append(user.Friends, result.Friends...)

	sort.Slice(result.Pets, func(i, j int) bool {
		return result.Pets[i].ID < result.Pets[j].ID
	})
	sort.Slice(result.Team, func(i, j int) bool {
		return result.Team[i].ID < result.Team[j].ID
	})
	sort.Slice(result.Friends, func(i, j int) bool {
		return result.Friends[i].ID < result.Friends[j].ID
	})

		*GetUser("bulk_5", Config{Account: false, Pets: 0, Toys: 3, Company: true, Manager: false, Team: 1, Languages: 3, Friends: 1}),
		*GetUser("bulk_6", Config{Account: true, Pets: 4, Toys: 3, Company: false, Manager: true, Team: 1, Languages: 3, Friends: 0}),
		*GetUser("bulk_7", Config{Account: true, Pets: 1, Toys: 3, Company: true, Manager: true, Team: 4, Languages: 3, Friends: 1}),

    URLClassLoader sepLoader = new URLClassLoader(getClassPathUrls(), myLoader.getParent());
    // sepLoader is the loader that we will use to load the parallel FinalizableReferenceQueue (FRQ)
    // and friends, and that we will eventually expect to see garbage-collected. The assumption
    // is that the ClassLoader of this test is a URLClassLoader, and that it loads FRQ itself

    Set<String> friends = Sets.newHashSet("Tom", "Joe", "Dave");
    Set<String> enemies = Sets.newHashSet("Dick", "Harry", "Tom");

    Set<String> goodFriends = Sets.difference(friends, enemies);
    assertEquals(2, goodFriends.size());

    ImmutableSet<String> immut = Sets.difference(friends, enemies).immutableCopy();
    HashSet<String> mut = Sets.difference(friends, enemies).copyInto(new HashSet<String>());

    URLClassLoader sepLoader = new URLClassLoader(getClassPathUrls(), myLoader.getParent());
    // sepLoader is the loader that we will use to load the parallel FinalizableReferenceQueue (FRQ)
    // and friends, and that we will eventually expect to see garbage-collected. The assumption
    // is that the ClassLoader of this test is a URLClassLoader, and that it loads FRQ itself

	DB.Create(&user)

	DB.Preload("Team").Preload("Languages").Preload("Friends").First(&user, "name = ?", user.Name)

	if r, err := json.Marshal(&user); err != nil {
		t.Errorf("failed to marshal users, got error %v", err)
	} else if !regexp.MustCompile(`"Team":\[\],"Languages":\[\],"Friends":\[\]`).MatchString(string(r)) {
		t.Errorf("json marshal is not empty slice, got %v", string(r))
	}

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