* artifact and does not contain any runtime specific data. The cache must not be used for descriptors that hold runtime
 * data like the plugin realm. <strong>Warning:</strong> This is an internal utility interface that is only public for
 * technical reasons, it is not part of the public API. In particular, this interface can be changed or deleted without
 * prior notice.
 *

# HTTP 基础授权

最简单的用例是使用 HTTP 基础授权（HTTP Basic Auth）。

在 HTTP 基础授权中，应用需要请求头包含用户名与密码。

如果没有接收到 HTTP 基础授权，就返回 HTTP 401 `"Unauthorized"` 错误。

并返回含 `Basic` 值的请求头 `WWW-Authenticate`以及可选的 `realm` 参数。

HTTP 基础授权让浏览器显示内置的用户名与密码提示。

输入用户名与密码后，浏览器会把它们自动发送至请求头。

## 简单的 HTTP 基础授权

* 导入 `HTTPBasic` 与 `HTTPBasicCredentials`
* 使用 `HTTPBasic` 创建**安全概图**
* 在*路径操作*的依赖项中使用 `security`
* 返回类型为 `HTTPBasicCredentials` 的对象：

Wenn sie diesen nicht empfängt, gibt sie den HTTP-Error 401 „Unauthorized“ zurück.

Und gibt einen Header `WWW-Authenticate` mit dem Wert `Basic` und einem optionalen `realm`-Parameter („Bereich“) zurück.

Dadurch wird der Browser angewiesen, die integrierte Eingabeaufforderung für einen Benutzernamen und ein Passwort anzuzeigen.

If it doesn't receive it, it returns an HTTP 401 "Unauthorized" error.

And returns a header `WWW-Authenticate` with a value of `Basic`, and an optional `realm` parameter.

That tells the browser to show the integrated prompt for a username and password.

Then, when you type that username and password, the browser sends them in the header automatically.

## Simple HTTP Basic Auth

			cfg: &kubeadmapi.ClusterConfiguration{
				ImageRepository: "real.repo",
			},
			expectedImages: []string{
				"real.repo/kube-apiserver:",
				"real.repo/kube-controller-manager:",
				"real.repo/kube-scheduler:",
				"real.repo/kube-proxy:",
				"real.repo/coredns:" + constants.CoreDNSVersion,
				"real.repo/pause:" + constants.PauseVersion,
			},
		},
		{

)

const (
	rsCheckDeleteInterval = 1 * time.Minute
)

// listItem stores real server information and the process time.
// If nothing special happened, real server will be delete after process time.
type listItem struct {
	VirtualServer *utilipvs.VirtualServer
	RealServer    *utilipvs.RealServer
}

// String return the unique real server name(with virtual server information)
func (g *listItem) String() string {

	}
	// Add real server to the virtual server
	for i := range rss {
		if err = fake.AddRealServer(vs, rss[i]); err != nil {
			t.Errorf("Fail to add real server, error: %v", err)
		}
	}
	// Delete a real server of the virtual server
	// Make sure any position of the list can be real deleted
	rssLen := len(rss)
	for i := range rss {
		// List all real servers of the virtual server

	GetVirtualServers() ([]*VirtualServer, error)
	// AddRealServer creates the specified real server for the specified virtual server.
	AddRealServer(*VirtualServer, *RealServer) error
	// GetRealServers returns all real servers for the specified virtual server.
	GetRealServers(*VirtualServer) ([]*RealServer, error)
	// DeleteRealServer deletes the specified real server from the specified virtual server.
	DeleteRealServer(*VirtualServer, *RealServer) error

// For generalized compatibility with [math.Pow]:
//
//	Pow(0, ±0) returns 1+0i
//	Pow(0, c) for real(c)<0 returns Inf+0i if imag(c) is zero, otherwise Inf+Inf i.
func Pow(x, y complex128) complex128 {
	if x == 0 { // Guaranteed also true for x == -0.
		if IsNaN(y) {
			return NaN()
		}
		r, i := real(y), imag(y)
		switch {
		case r == 0:
			return 1
		case r < 0:
			if i == 0 {

        given:
        def real = candidates.createDir("installs/java/11.0.6.hs-adpt")
        def symlink = candidates.file("installs/java/symlink").createLink(real)

        when:
        def directories = supplier.get()

        then:
        directories.size() == 2
        directories*.location.containsAll(real, symlink)
        directories*.source.unique() == ["asdf-vm"]