} unicode_string;

	/* 
	 * typedef struct _SID_IDENTIFIER_AUTHORITY {
	 *     UCHAR Value[6];
	 * } SID_IDENTIFIER_AUTHORITY, *PSID_IDENTIFIER_AUTHORITY;
	 * 
	 * #define SECURITY_NT_AUTHORITY           {0,0,0,0,0,5}
	 * 
	 * typedef struct _SID {
	 *    UCHAR Revision;
	 *    UCHAR SubAuthorityCount;
	 *    SID_IDENTIFIER_AUTHORITY IdentifierAuthority;

	} unicode_string;

	/* 
	 * typedef struct _SID_IDENTIFIER_AUTHORITY {
	 *     UCHAR Value[6];
	 * } SID_IDENTIFIER_AUTHORITY, *PSID_IDENTIFIER_AUTHORITY;
	 * 
	 * #define SECURITY_NT_AUTHORITY           {0,0,0,0,0,5}
	 * 
	 * typedef struct _SID {
	 *    UCHAR Revision;
	 *    UCHAR SubAuthorityCount;
	 *    SID_IDENTIFIER_AUTHORITY IdentifierAuthority;

 *  JQUERY-FORM-VALIDATOR
 *
 *  @version 2.3.77
 *  @website http://formvalidator.net/
 *  @author Victor Jonsson, http://victorjonsson.se
 *  @license MIT
 */

Die meisten Standard-Header benutzen als Trennzeichen einen Bindestrich, auch bekannt als das „Minus-Symbol“ (`-`).

Aber eine Variable wie `user-agent` ist in Python nicht gültig.

Darum wird `Header` standardmäßig in Parameternamen den Unterstrich (`_`) zu einem Bindestrich (`-`) konvertieren.

```Python hl_lines="6-7"
{!../../docs_src/query_params/tutorial005.py!}
```

Hier ist `needy` ein erforderlicher Query-Parameter vom Typ `str`.

Wenn Sie in Ihrem Browser eine URL wie:

```
http://127.0.0.1:8000/items/foo-item
```

... öffnen, ohne den benötigten Parameter `needy`, dann erhalten Sie einen Fehler wie den folgenden:

```JSON

// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#define X 1

 *
 * @since 4.0.0
 */
@Experimental
@Immutable
public interface Lifecycle extends ExtensibleEnum {

    // =========================
    // Maven defined lifecycles
    // =========================
    String CLEAN = "clean";
    String DEFAULT = "default";
    String SITE = "site";

    // ======================
    // Phase qualifiers

```

////

**FastAPI** will **extract** the data for **each field** from the **cookies** received in the request and give you the Pydantic model you defined.

## Check the Docs

You can see the defined cookies in the docs UI at `/docs`:

<div class="screenshot">
<img src="/img/tutorial/cookie-param-models/image01.png">
</div>

/// info

# Security Tools

When you need to declare dependencies with OAuth2 scopes you use `Security()`.

But you still need to define what is the dependable, the callable that you pass as a parameter to `Depends()` or `Security()`.

There are multiple tools that you can use to create those dependables, and they get integrated into OpenAPI so they are shown in the automatic docs UI, they can be used by automatically generated clients and SDKs, etc.

package plugin

import "errors"

// ErrNotImplemented is returned when a requested feature is not implemented.
var ErrNotImplemented = errors.New("not implemented")

// Program defines a method which programs iptables based on the parameters
// provided in Redirect.
func (ipt *iptables) Program(podName, netns string, rdrct *Redirect) error {
	return ErrNotImplemented