list.add("5");
      fail("transformed list is addable");
    } catch (UnsupportedOperationException expected) {
    }
    list.remove(0);
    assertEquals(asList("2", "3", "4"), list);
    list.remove("3");
    assertEquals(asList("2", "4"), list);
    try {
      list.set(0, "5");
      fail("transformed list is setable");
    } catch (UnsupportedOperationException expected) {
    }
    list.clear();

      list.add("5");
      fail("transformed list is addable");
    } catch (UnsupportedOperationException expected) {
    }
    list.remove(0);
    assertEquals(asList("2", "3", "4"), list);
    list.remove("3");
    assertEquals(asList("2", "4"), list);
    try {
      list.set(0, "5");
      fail("transformed list is setable");
    } catch (UnsupportedOperationException expected) {
    }
    list.clear();

    assertEquals(false, tearDownTwo.ran);

    try {
      stack.runTearDown();
      fail("runTearDown should have thrown an exception");
    } catch (ClusterException expected) {
      assertThat(expected).hasCauseThat().hasMessageThat().isEqualTo("two");
    } catch (RuntimeException e) {
      throw new RuntimeException(
          "A ClusterException should have been thrown, rather than a " + e.getClass().getName(), e);
    }

            return new Metadata();
        }

        try (InputStream input = Files.newInputStream(metadataPath)) {
            return new Metadata(new MetadataStaxReader().read(input, false));
        } catch (IOException | XMLStreamException e) {
            throw new RepositoryException("Could not parse metadata " + metadataPath + ": " + e.getMessage(), e);
        }
    }

                (InternalFutureFailureAccess) localInputFuture);
      }
      if (throwable == null) {
        sourceResult = getDone(localInputFuture);
      }
    } catch (ExecutionException e) {
      throwable = e.getCause();
      if (throwable == null) {
        throwable =
            new NullPointerException(
                "Future type "

            prop.load(fis);
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
        properties = prop;
    }

    public synchronized void store() {
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(propertiesFile);
            properties.store(fos, propertiesFile.getName());
        } catch (final IOException e) {

    public OptionalEntity<UserInfo> getUserInfo(final String userCode) {
        if (StringUtil.isNotBlank(userCode)) {
            try {
                return OptionalEntity.of(userInfoCache.get(userCode));
            } catch (final ExecutionException e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to access UserInfo cache.", e);
                }
            }
        }

        try {
            return SingletonLaContainer.getComponent(clazz);
        } catch (final NullPointerException e) {
            if (logger.isDebugEnabled()) {
                throw new ContainerNotAvailableException(clazz.getCanonicalName(), e);
            }
            throw new ContainerNotAvailableException(clazz.getCanonicalName());
        } catch (final ComponentNotFoundException | AutoBindingFailureException e) {

            servletContext.setSessionTrackingModes(
                    fessConfig.getSessionTrackingModesAsSet().stream().map(SessionTrackingMode::valueOf).collect(Collectors.toSet()));
        } catch (final Throwable t) {
            logger.warn("Failed to set SessionTrackingMode.", t);
        }

                    return method.invoke(value, OBJECT_ARGS);
                }
            }
            return null;
        } catch (InvocationTargetException e) {
            throw new IntrospectionException(e.getTargetException());
        } catch (AmbiguousException | IllegalAccessException e) {
            throw new IntrospectionException(e);
        }
    }