Якщо клієнт спробує надіслати додаткові дані, він отримає **відповідь з помилкою**.

Наприклад, якщо клієнт спробує надіслати поля форми:

* `username`: `Rick`
* `password`: `Portal Gun`
* `extra`: `Mr. Poopybutthole`

Він отримає відповідь із помилкою, яка повідомляє, що поле `extra` не дозволено:

```json
{
    "detail": [
        {
            "type": "extra_forbidden",

            doColumn("hostname");
        }

        public void columnParameters() {
            doColumn("parameters");
        }

        public void columnPassword() {
            doColumn("password");
        }

        public void columnPort() {
            doColumn("port");
        }

        public void columnProtocolScheme() {
            doColumn("protocolScheme");
        }

                                                     property="ldapAdminSecurityCredentials"
                                                     styleClass="form-control" autocomplete="new-password"/>
                                    </div>
                                </div>
                                <div class="form-group row">
                                    <label for="ldapSecurityPrincipal"

ugyldigt",badNumberOfSelectedOptionsEnd:" svar",badNumberOfSelectedOptionsStart:"Du skal vælge mindst ",badSecurityAnswer:"Du har ikke angivet et korrekt svar til sikkerhedsspørgsmålet",badSecurityNumber:"Dit CPR nummer er ikke korrekt",badStrength:"Det angivne password er ikke stærkt nok",badTelephone:"Det angivne telefonnummer er ugyldigt",badTime:"Det angivne tidspunkt er ugyldigt",badUrl:"Den angivne URL er ugyldig",badreCaptcha:"Verificer venligst at du ikke er en bot",errorTitle:"Formular forespørgslen fe...

Caso um cliente tente enviar informações adicionais, ele receberá um retorno de **erro**.

Por exemplo, se o cliente tentar enviar os campos de formulário:

* `username`: `Rick`
* `password`: `Portal Gun`
* `extra`: `Mr. Poopybutthole`

Ele receberá um retorno de erro informando-o que o campo `extra` não é permitido:

```json
{
    "detail": [
        {
            "type": "extra_forbidden",

)

// Provider implements identity provider specific admin operations, such as
// looking up users, fetching additional attributes etc.
type Provider interface {
	LoginWithUser(username, password string) error
	LoginWithClientID(clientID, clientSecret string) error
	LookupUser(userid string) (User, error)

					<div class="input-group mb-3">
						<c:set var="ph_new_password">
							<la:message key="labels.login.placeholder_new_password" />
						</c:set>
						<la:password property="password" class="form-control"
							placeholder="${ph_new_password}" />
						<div class="input-group-append">
							<span class="input-group-text">
								<i class="fa fa-lock fa-fw" aria-hidden="true"></i>
							</span>

						</div>
					</div>
					<div class="input-group mb-3">
						<c:set var="ph_password">
							<la:message key="labels.login.placeholder_password" />
						</c:set>
						<la:password property="password" class="form-control"
							placeholder="${ph_password}" />
						<div class="input-group-append">
							<span class="input-group-text">
								<i class="fa fa-lock fa-fw" aria-hidden="true"></i>
							</span>

 * </p>
 *
 * <p>
 * Example usage:
 * </p>
 * <pre>
 * {@code
 * AuthScope authScope = new AuthScope("example.com", 80);
 * Credentials credentials = new UsernamePasswordCredentials("user", "password");
 * Hc4Authentication auth = new Hc4Authentication(authScope, credentials);
 * }
 * </pre>
 */
public class Hc4Authentication {
    private AuthScope authScope;

    private Credentials credentials;

 * </p>
 *
 * <p>
 * Example usage:
 * </p>
 * <pre>
 * {@code
 * AuthScope authScope = new AuthScope("example.com", 80);
 * Credentials credentials = new UsernamePasswordCredentials("user", "password".toCharArray());
 * Hc5Authentication auth = new Hc5Authentication(authScope, credentials);
 * }
 * </pre>
 */
public class Hc5Authentication {
    private AuthScope authScope;