var exp expirationWrapper
	err := d.DecodeElement(&exp, &startElement)
	if err != nil {
		return err
	}
	*e = Expiration(exp)
	e.set = true
	return nil
}

// Validate - validates the "Expiration" element
func (e Expiration) Validate() error {
	if !e.set {
		return nil
	}

	// DeleteMarker cannot be specified if date or dates are specified.
	if (!e.IsDaysNull() || !e.IsDateNull()) && e.DeleteMarker.set {

```

</div>

Sonra `/docs` arayüzüne gidin; **FastAPI**’nin API’yi **dokümante etmek** için bu **modelleri** kullandığını göreceksiniz. Ayrıca veriyi **serialize** ve **validate** etmek için de onları kullanacaktır.

<div class="screenshot">
<img src="/img/tutorial/sql-databases/image01.png">
</div>

## Birden Fazla Model ile Uygulamayı Güncelleme { #update-the-app-with-multiple-models }

import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test

/**
 * Jetty HTTP client.
 *
 * https://www.eclipse.org/jetty/documentation/current/http-client.html
 *
 * Baseline test if we ned to validate OkHttp behaviour against other popular clients.
 */
class JettyHttpClientTest {
  private val client = HttpClient()

  @StartStop
  private val server = MockWebServer()

  @BeforeEach fun setUp() {

			return val
		}
		// Skip it
		_, buf, err = msgp.ReadBytesZC(buf)
		if err != nil {
			return nil
		}
	}
	return nil
}

// validate checks if the data is valid.
// It does not check integrity of the stored data.
func (x xlMetaInlineData) validate() error {
	if len(x) == 0 {
		return nil
	}

	if !x.versionOK() {
		return fmt.Errorf("xlMetaInlineData: unknown version 0x%x", x[0])
	}

}

// Wrapper for calling PutObject tests for both Erasure multiple disks and single node setup.
func TestObjectAPIPutObjectSingle(t *testing.T) {
	ExecExtendedObjectLayerTest(t, testObjectAPIPutObject)
}

// Tests validate correctness of PutObject.
func testObjectAPIPutObject(obj ObjectLayer, instanceType string, t TestErrHandler) {
	// Generating cases for which the PutObject fails.
	bucket := "minio-bucket"
	object := "minio-object"

Verileri şuradan alarak:

* path'ten parameter olarak.
* Header'lardan.
* Cookie'lerden.
* vb.

Bunu yaptığınızda **FastAPI**, bu verileri doğrular (validate eder), dönüştürür ve API'niz için dokümantasyonu otomatik olarak üretir.

Ancak bazı durumlarda `Request` nesnesine doğrudan erişmeniz gerekebilir.

## `Request` nesnesi hakkında detaylar { #details-about-the-request-object }

import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.RegisterExtension

/**
 * Java HTTP Client.
 *
 * https://openjdk.java.net/groups/net/httpclient/intro.html
 *
 * Baseline test if we ned to validate OkHttp behaviour against other popular clients.
 */
class JavaHttpClientTest {
  @JvmField @RegisterExtension
  val platform = PlatformRule()

  @StartStop
  private val server = MockWebServer()

	// End is the offset of the last byte that should be returned when Start
	// is set, otherwise it is the offset from EOF to start reading.
	End *uint64 `xml:"End"`
}

// Validate if the scan range is valid.
func (s *ScanRange) Validate() error {
	if s == nil {
		return nil
	}
	if s.Start == nil && s.End == nil {
		// This parameter is optional, but when specified, it must not be empty.

     * @return HTML response redirecting to the storage list after upload
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse upload(final ItemForm form) {
        validate(form, messages -> {}, () -> asListHtml(form.path));
        if (form.uploadFile == null) {
            throwValidationError(messages -> messages.addErrorsStorageNoUploadFile(GLOBAL), () -> asListHtml(form.path));
        }

		return
	}

	// Validate operation
	operation := mux.Vars(r)["operation"]
	if operation != "attach" && operation != "detach" {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminInvalidArgument), r.URL)
		return
	}

	isAttach := operation == "attach"

	// Validate API arguments in body.
	password := cred.SecretKey