func (tag Tag) String() string {
	return tag.Key + "=" + tag.Value
}

// IsEmpty returns whether this tag is empty or not.
func (tag Tag) IsEmpty() bool {
	return tag.Key == ""
}

// Validate checks this tag.
func (tag Tag) Validate() error {
	if len(tag.Key) == 0 || utf8.RuneCountInString(tag.Key) > 128 {
		return errInvalidTagKey
	}

	if utf8.RuneCountInString(tag.Value) > 256 {
		return errInvalidTagValue
	}

)

// Target implements loggerTarget to send log
// in plain or json format to the standard output.
type Target struct {
	output io.Writer
}

// Validate - validate if the tty can be written to
func (c *Target) Validate() error {
	return nil
}

// Endpoint returns the backend endpoint
func (c *Target) Endpoint() string {
	return ""
}

func (c *Target) String() string {
	return "console"

     * file and has not been subjected to inheritance, interpolation or profile/default injection.
     *
     * @param model The model to validate, must not be {@code null}.
     * @param request The model building request that holds further settings, must not be {@code null}.

## Pydantic `bytes` { #pydantic-bytes }

`bytes` alanları olan bir Pydantic model tanımlayabilir, ardından model config'inde `val_json_bytes` kullanarak giriş JSON verisini base64 ile doğrulamasını (validate) söyleyebilirsiniz; bu doğrulamanın bir parçası olarak base64 string'i bytes'a decode eder.

{* ../../docs_src/json_base64_bytes/tutorial001_py310.py ln[1:9,29:35] hl[9] *}

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

	// Before proceeding validate if bucket exists.
	_, err := objAPI.GetBucketInfo(ctx, bucket, BucketOptions{})
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	aclHeader := r.Header.Get(xhttp.AmzACL)

     * Updates the LDAP configuration.
     */
    public void updateConfig() {
        isBind = false;
    }

    /**
     * Validates the LDAP connection.
     *
     * @return True if the LDAP connection is valid, otherwise false.
     */
    protected boolean validate() {
        if (!isBind) {
            if (fessConfig.getLdapAdminSecurityPrincipal() == null || fessConfig.getLdapAdminSecurityCredentials() == null) {

            childList.add(uq);
            urlQueueService.offerAll(crawlerContext.sessionId, childList);
        }
    }

    /**
     * Validates whether the URL queue entry is valid for crawling.
     * @param urlQueue The URL queue entry to validate.
     * @return true if valid, false otherwise.
     */
    protected boolean isValid(final UrlQueue<?> urlQueue) {

		t.Run(tt.name, func(t *testing.T) {
			n := NSQArgs{
				Enable:      tt.fields.Enable,
				NSQDAddress: tt.fields.NSQDAddress,
				Topic:       tt.fields.Topic,
			}
			if err := n.Validate(); (err != nil) != tt.wantErr {
				t.Errorf("NSQArgs.Validate() error = %v, wantErr %v", err, tt.wantErr)
			}
		})
	}

	if apiErr != noError {
		writeErrorResponse(ctx, w, apiErr, r.URL)
		return
	}
	// Validate the received bucket replication config
	if err = replicationConfig.Validate(bucket, sameTarget); err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}
	configData, err := xml.Marshal(replicationConfig)
	if err != nil {

     * @return HTML response for the duplicate host edit form
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse edit(final EditForm form) {
        validate(form, messages -> {}, this::asListHtml);
        final String id = form.id;
        duplicateHostService.getDuplicateHost(id).ifPresent(entity -> {
            copyBeanToBean(entity, form, op -> {});