{* ../../docs_src/header_param_models/tutorial001_an_py310.py hl[9:14,18] *}

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

## Check the Docs { #check-the-docs }

You can see the required headers in the docs UI at `/docs`:

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

        Name name = new Name(mockConfig, "TEST", 0x20, null);
        byte[] dst = new byte[100];

        int length = name.writeWireFormat(dst, 0);

        // Check first byte is 0x20
        assertEquals(0x20, dst[0]);

        // Check encoded name (TEST -> encoded as pairs)
        // T = 0x54 -> upper nibble: 0x5 -> 0x46 (F), lower nibble: 0x4 -> 0x45 (E)

        byte[] buffer = new byte[512];
        int written = trans2QueryFSInfo.writeParametersWireFormat(buffer, 0);

        // Should write 2 bytes: information level
        assertEquals(2, written);

        // Check information level (SMB_INFO_ALLOCATION maps to 0x0001)
        int actualInfoLevel = SMBUtil.readInt2(buffer, 0);
        assertEquals(0x0001, actualInfoLevel);
    }

    @Test

      return;
    }
    try {
      result = runInterruptibly();
    } catch (Throwable t) {
      error = t;
    }
    if (error == null) {
      // The cast is safe because of the `run` and `error` checks.
      afterRanInterruptiblySuccess(uncheckedCastNullableTToT(result));
    } else {
      afterRanInterruptiblyFailure(error);
    }
  }

  abstract boolean isDone();

 * with the server, including security requirements like message signing.
 *
 * @author mbechler
 */
public interface SmbNegotiationRequest {

    /**
     * Checks whether SMB message signing is enforced by the client.
     *
     * @return whether SMB signing is enforced
     */
    boolean isSigningEnforced();

{* ../../docs_src/path_params/tutorial002.py hl[7] *}

Bu durumda, `item_id` bir `int` olarak tanımlanacaktır.

/// check | Ek bilgi

Bu sayede, fonksiyon içerisinde hata denetimi, kod tamamlama gibi konularda editör desteğine kavuşacaksınız.

///

Ви можете визначити тип параметра шляху у функції, використовуючи стандартні анотації типів Python:

{* ../../docs_src/path_params/tutorial002.py hl[7] *}

У такому випадку `item_id` визначається як `int`.

/// check | Примітка

Це дасть можливість підтримки редактора всередині функції з перевірками помилок, автодоповнення тощо.

///

## <abbr title="або: серіалізація, парсинг, маршалізація">Перетворення</abbr> даних

	// username in authentication request matches to identities in certificate
	// and that certificate type is correct.
	checker := ssh.CertChecker{}
	checker.IsUserAuthority = func(k ssh.PublicKey) bool {
		return subtle.ConstantTimeCompare(globalSFTPTrustedCAPubkey.Marshal(), k.Marshal()) == 1
	}

	_, err = checker.Authenticate(c, clientKey)
	return
}

type sftpLogger struct{}

        name = "Nightly Snapshot (from QuickFeedback) - Promote"
        description =
            "Promotes a previously built distribution on this agent on '${branch.branchName}' from Quick Feedback as a new nightly snapshot. This build checks out gradle-promote, so don't be misled by the 'master' branch."

        steps {
            buildStep(
                ******@****.***arameters,

		return
	}

	if s3Error := checkRequestAuthType(ctx, r, policy.PutBucketLifecycleAction, bucket, ""); s3Error != ErrNone {
		writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
		return
	}

	// Check if bucket exists.
	rcfg, err := globalBucketObjectLockSys.Get(bucket)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}