assertThat(expected).hasCauseThat().isEqualTo(cause);

    Object newValue = new Object();
    valueRef.set(newValue);
    assertThat(cache.getUnchecked(new Object())).isSameInstanceAs(newValue);
  }

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

        void testGetRootCause() {
            Exception rootCause = new IllegalStateException("Test root cause");
            TransportException exception = new TransportException("Message", rootCause);

            assertEquals(rootCause, exception.getRootCause());
        }

        @Test
        @DisplayName("Should return null when no root cause")
        void testGetRootCauseWhenNull() {

     *
     * @param message
     * @param cause
     * @since 2.0.9
     */
    public MojoFailureException(String message, Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new {@code MojoFailureException} exception wrapping an underlying {@code Throwable}.
     *
     * @param cause the cause which is saved for later retrieval by the {@link #getCause()} method.

     * Constructs a new CurlException with the specified detail message and cause.
     *
     * @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 {@link #getCause()} method).
     *              (A {@code null} value is permitted, and indicates that the cause is nonexistent or unknown.)
     */

    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);
    }
  }

  public static final class ExceptionWithPrivateConstructor extends Exception {

     * The abort flag is set to false by default.
     *
     * @param url the URL where the crawling error occurred
     * @param message the error message
     * @param cause the underlying exception that caused this error
     */
    public DataStoreCrawlingException(final String url, final String message, final Throwable cause) {
        this(url, message, cause, false);
    }

        this.originalMessage = originalMessage;
    }

    public PluginConfigurationException(PluginDescriptor pluginDescriptor, String originalMessage, Throwable cause) {
        super(originalMessage, cause);
        this.pluginDescriptor = pluginDescriptor;
        this.originalMessage = originalMessage;
    }

    /**
     * Ctor left for binary compatibility.
     *

     * Creates a {@link ClassNotFoundRuntimeException}.
     *
     * @param cause the underlying exception
     */
    public ClassNotFoundRuntimeException(final ClassNotFoundException cause) {
        this(null, cause);
    }

    /**
     * Creates a {@link ClassNotFoundRuntimeException}.
     *
     * @param className the class name
     * @param cause the underlying 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,

    }

    /**
     * Creates a new exception with specified cause
     *
     * @param cause
     * @param groupId
     * @param artifactId
     * @param version
     */
    public UnresolvableModelException(Throwable cause, String groupId, String artifactId, String version) {
        super(cause);
        this.groupId = groupId;
        this.artifactId = artifactId;