}

    /**
     * Constructs a new {@code MojoExecutionException} exception wrapping an underlying {@code Throwable}.
     *
     * @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 MojoExecutionException(Throwable cause) {
        super(cause);

     *                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 InterpolatorException(String message, Throwable cause) {

            try {
              String result = Uninterruptibles.getUninterruptibly(currentFuture.get());
              finalResults.add(result);
            } catch (ExecutionException e) {
              finalResults.add(e.getCause());
            } catch (CancellationException e) {
              finalResults.add(CancellationException.class);
            } finally {
              awaitUnchecked(barrier);
            }
          }

            } else {
                logger.error(entry.message());
                for (Throwable cause = entry.error();
                        cause != null && cause != cause.getCause();
                        cause = cause.getCause()) {
                    logger.log(entry.level(), "Caused by: " + cause.getMessage());
                }
            }
        }
    }

                            retry = true;
                        } else {
                            handleChecksumFailure(checksumPolicy, e.getMessage(), e.getCause());
                        }
                    } catch (ResourceDoesNotExistException sha1TryException) {
                        logger.debug("SHA1 not found, trying MD5: " + sha1TryException.getMessage());

        } catch (RuntimeException e) {
            // TODO Hack to make the cycle detection the same for the new graph builder
            if (e.getCause() instanceof ProjectCycleException) {
                result = addExceptionToResult(new DefaultMavenExecutionResult(), e.getCause());
            } else {
                result = addExceptionToResult(

    ListenableFuture<String> chain = buildChainingFuture(badInput);
    ExecutionException e = assertThrows(ExecutionException.class, () -> chain.get());
    assertThat(e.getCause()).isInstanceOf(BadFutureRuntimeException.class);
  }

  /** Proxy to throw a {@link RuntimeException} out of the {@link #get()} method. */
  public static class BadFuture extends SimpleForwardingListenableFuture<Integer> {

    ListenableFuture<String> chain = buildChainingFuture(badInput);
    ExecutionException e = assertThrows(ExecutionException.class, () -> chain.get());
    assertThat(e.getCause()).isInstanceOf(BadFutureRuntimeException.class);
  }

  /** Proxy to throw a {@link RuntimeException} out of the {@link #get()} method. */
  public static class BadFuture extends SimpleForwardingListenableFuture<Integer> {

      actual = e;
    }
    assertNotNull("verify() should be able to cause test failure", actual);
    assertTrue(
        "AssertionError should have info about why test failed",
        actual.getCause().getMessage().contains(message));
  }

  public void testMissingException() {
    List<Integer> emptyList = new ArrayList<>();

    IteratorTester<Integer> tester =
        new IteratorTester<Integer>(

        Exception e = assertThrows(Exception.class, () -> ee.evaluate("${session.rootDirectory}"));
        e = assertInstanceOf(IntrospectionException.class, e.getCause());
        e = assertInstanceOf(IllegalStateException.class, e.getCause());
        assertEquals(RootLocator.UNABLE_TO_FIND_ROOT_PROJECT_MESSAGE, e.getMessage());
    }

    @Test
    void testRootDirectory() throws Exception {