if err = json.Unmarshal(reqBytes, &updateReq); err != nil {
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErrWithErr(ErrAdminConfigBadJSON, err), r.URL)
		return
	}

	if err := updateReq.Validate(); err != nil {
		// Since this validation would happen client side as well, we only send
		// a generic error message here.
		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErr(ErrAdminResourceInvalidArgument), r.URL)

      headers.add(name, value.toString())
    }

    /**
     * Adds a new header with the name and value. This may be used to add multiple headers with the
     * same name. Unlike [addHeader] this does not validate the name and
     * value.
     */
    fun addHeaderLenient(
      name: String,
      value: Any,
    ) = apply {
      addHeaderLenient(headers, name, value.toString())
    }

    * Because pydantic data structures are just instances of classes you define; auto-completion, linting, mypy and your intuition should all work properly with your validated data.
* Validate **complex structures**:
    * Use of hierarchical Pydantic models, Python `typing`’s `List` and `Dict`, etc.
    * And validators allow complex data schemas to be clearly and easily defined, checked and documented as JSON Schema.

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> là một thư viện Python để validate dữ liệu hiệu năng cao.

Bạn có thể khai báo "hình dạng" của dữa liệu như là các lớp với các thuộc tính.

Và mỗi thuộc tính có một kiểu dữ liệu.

    if value is None:
        if field.required:
            return None, [get_missing_field_error(loc=loc)]
        else:
            return deepcopy(field.default), []
    v_, errors_ = field.validate(value, values, loc=loc)
    if isinstance(errors_, ErrorWrapper):
        return None, [errors_]
    elif isinstance(errors_, list):
        new_errors = _regenerate_error_with_loc(errors=errors_, loc_prefix=())

	} else {
		v, ok = r.Header[xhttp.AmzContentSha256]
	}

	// Skip if no header was set.
	if !ok {
		return true
	}

	// If x-amz-content-sha256 is set and the value is not
	// 'UNSIGNED-PAYLOAD' we should validate the content sha256.
	switch v[0] {
	case unsignedPayload, unsignedPayloadTrailer:
		return true
	case emptySHA256:
		// some broken clients set empty-sha256
		// with > 0 content-length in the body,

				ClientConfig: admitv1.WebhookClientConfig{
					URL:      &remoteInjectionURL,
					CABundle: []byte("ca"),
				},
			},
		},
	}
	remoteValidationURL = "https://random.host.com/validate"
)

func TestGenerateValidatingWebhook(t *testing.T) {
	tcs := []struct {
		name           string
		istioNamespace string
		webhook        admitv1.MutatingWebhookConfiguration
		whURL          string

  // * webhooks that use this option may be reordered to minimize the number of additional invocations.
  // * to validate an object after all mutations are guaranteed complete, use a validating admission webhook instead.
  //
  // Defaults to "Never".
  // +optional
  optional string reinvocationPolicy = 10;

    public HtmlResponse index() {
        saveToken();
        return asListHtml();
    }

    @Execute
    @Secured({ ROLE })
    public HtmlResponse upload(final UploadForm form) {
        validate(form, messages -> {}, this::asListHtml);
        verifyToken(this::asListHtml);
        final String fileName = form.bulkFile.getFileName();

		return BucketRemoteArnTypeInvalid{Bucket: bucket}
	}
	clnt, err := sys.getRemoteTargetClient(tgt)
	if err != nil {
		return BucketRemoteTargetNotFound{Bucket: tgt.TargetBucket, Err: err}
	}
	// validate if target credentials are ok
	exists, err := clnt.BucketExists(ctx, tgt.TargetBucket)
	if err != nil {
		switch minio.ToErrorResponse(err).Code {
		case "NoSuchBucket":