- Added a new flag `--append-server-path` to `kubectl proxy` that will automatically append the kube context server path to each request. ([#97350](https://github.com/kubernetes/kubernetes/pull/97350), [@FabianKramm](https://github.com/FabianKramm))

s3 := append(s2, s0...)            // append a slice              s3 is []int{0, 0, 2, 3, 5, 7, 0, 0}
s4 := append(s3[3:6], s3[2:]...)   // append overlapping slice    s4 is []int{3, 5, 7, 2, 3, 5, 7, 0, 0}

var t []interface{}
t = append(t, 42, 3.1415, "foo")   //                             t is []interface{}{42, 3.1415, "foo"}

var b []byte

- Added `ResourceVersion` as a precondition for delete in order to ensure a delete fails if an unobserved change happens to an object. ([#74040](https://github.com/kubernetes/kubernetes/pull/74040), [@ajatprabha](https://github.com/ajatprabha))

	DB.Create(&language)

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

	user.Languages = append(user.Languages, language)
	CheckUser(t, user2, user)

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

	languages := []Language{
		{Code: "language-many2many-append-1-1", Name: "language-many2many-append-1-1"},

	}

	DB.Migrator().DropTable(&JoinTable{})
	if err := DB.AutoMigrate(&JoinTable{}); err != nil {
		t.Errorf("no error should happen when auto migrate, but got %v", err)
	}

	jt := JoinTable{UserID: 1, FriendID: 2}
	err := DB.Create(&jt).Error
	if err != nil {

			t.Errorf("errors happened when query before user: %v", err)
		}
		CheckUser(t, first, *users[0])

		if err := DB.Where("id = ?", users[2].ID).First(&last).Error; err != nil {
			t.Errorf("errors happened when query after user: %v", err)
		}
		CheckUser(t, last, *users[2])
	}

	if err := DB.Create(&users).Error; err != nil {
		t.Fatalf("errors happened when create: %v", err)
	} else if user.ID == 0 {

	}

	if err := DB.Create(&data).Error; err != nil {
		t.Fatalf("No error should happened when create scanner valuer struct, but got %v", err)
	}

	var result ScannerValuerStruct

	if err := DB.Find(&result, "id = ?", data.ID).Error; err != nil {
		t.Fatalf("no error should happen when query scanner, valuer struct, but got %v", err)
	}

	if result.ExampleStructPtr.Val != "value2" {

	}

	// Append
	DB.Model(&users).Association("Pets").Append(
		&Pet{Name: "pet-slice-append-1"},
		[]*Pet{{Name: "pet-slice-append-2-1"}, {Name: "pet-slice-append-2-2"}},
		&Pet{Name: "pet-slice-append-3"},
	)

	AssertAssociationCount(t, users, "Pets", 10, "After Append")

	// Replace -> same as append
	DB.Model(&users).Association("Pets").Replace(

	}

	// Append
	DB.Model(&users).Association("Account").Append(
		&Account{Number: "account-slice-append-1"},
		&Account{Number: "account-slice-append-2"},
		&Account{Number: "account-slice-append-3"},
	)

	AssertAssociationCount(t, users, "Account", 3, "After Append")

	// Replace -> same as append

	// Delete

	}

	// Append
	DB.Model(&users).Association("Company").Append(
		&Company{Name: "company-slice-append-1"},
		&Company{Name: "company-slice-append-2"},
		&Company{Name: "company-slice-append-3"},
	)

	AssertAssociationCount(t, users, "Company", 3, "After Append")

	DB.Model(&users).Association("Manager").Append(
		GetUser("manager-slice-belongs-to-1", Config{}),