### Création d'un `Enum`

Importez `Enum` et créez une sous-classe qui hérite de `str` et `Enum`.

En héritant de `str` la documentation sera capable de savoir que les valeurs doivent être de type `string` et pourra donc afficher cette `Enum` correctement.

Créez ensuite des attributs de classe avec des valeurs fixes, qui seront les valeurs autorisées pour cette énumération.

```Python hl_lines="1  6-9"

     *
     * <p>Note that the detail message associated with {@code cause} is <i>not</i>
     * automatically incorporated in this exception's detail message.</p>
     *
     * @param message the detail message (which is saved for later retrieval
     *                by the {@link #getMessage()} method).
     * @param cause   the cause (which is saved for later retrieval by the

    super(message, cause);
  }

  /**
   * Creates a new instance with {@code null} as its detail message and the given cause. Prefer to
   * provide a non-nullable {@code cause}, as many users expect to find one.
   */
  public ExecutionError(@CheckForNull Error cause) {
    super(cause);
  }

  private static final long serialVersionUID = 0;

    Object newValue = new Object();
    valueRef.set(newValue);
    assertSame(newValue, cache.getUnchecked(new Object()));
  }

  public void testGetUnchecked_unchecked() {
    final RuntimeException cause = new RuntimeException();
    final AtomicReference<Object> valueRef = new AtomicReference<>();
    LoadingCache<Object, Object> cache =
        new AbstractLoadingCache<Object, Object>() {
          @Override

        this(message, -1, -1, cause);
    }

    public ModelParserException(String message, int lineNumber, int columnNumber, Throwable cause) {
        super(message, cause);
        this.lineNumber = lineNumber;
        this.columnNumber = columnNumber;
    }

    public ModelParserException(Throwable cause) {
        this(null, cause);
    }

  public static final class TwoArgConstructorException extends Exception {
    public TwoArgConstructorException(String message, Throwable cause) {
      super(message, cause);
    }
  }

  public static final class TwoArgConstructorRuntimeException extends RuntimeException {
    public TwoArgConstructorRuntimeException(String message, Throwable cause) {
      super(message, cause);
    }
  }

     * @param messageCode message code
     * @param cause cause of exception
     */
    public ClRuntimeException(final String messageCode, final Throwable cause) {
        this(messageCode, new Object[0], cause);
    }

    /**
     * Creates {@link ClRuntimeException}.
     *
     * @param messageCode message code
     * @param args arguments for messages
     * @param cause cause of exception
     */

	APICode string // The API error code identifying the error
	Err     string // The error message returned to the client
	Cause   error  // Optional, lower level error cause.
}

func (e Error) Error() string {
	if e.Cause == nil {
		return e.Err
	}
	return fmt.Sprintf("%s: %v", e.Err, e.Cause)
}

func errKeyCreationFailed(err error) Error {
	return Error{
		Code:    http.StatusInternalServerError,

     * @param cause The cause of the build failure, may be {@code null}.
     */
    public BuildFailure(MavenProject project, long execTime, long wallTime, Throwable cause) {
        super(project, execTime, wallTime);
        this.cause = cause;
    }

    /**
     * Gets the cause of the build failure.
     *
     * @return The cause of the build failure or {@code null} if unknown.
     */

     *
     * @param cause the cause which is saved for later retrieval by the {@link #getCause()} method.
     *              A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.
     * @since 3.8.3
     */
    public AbstractMojoExecutionException(Throwable cause) {
        super(cause);
    }

    public String getLongMessage() {