logger.error("Failed to write an image file: {}", fileName, e);
            throwValidationError(messages -> messages.addErrorsFailedToWriteDesignImageFile(GLOBAL), this::asListHtml);
        }
        return redirect(getClass());
    }

    private boolean checkFileType(final String fileName, final String[] exts) {
        if (fileName == null) {
            return false;
        }

      if (throwable == null) {
        throwable =
            new NullPointerException(
                "Future type "
                    + localInputFuture.getClass()
                    + " threw "
                    + e.getClass()
                    + " without a cause");
      }
    } catch (Throwable t) { // this includes CancellationException and sneaky checked exception
      throwable = t;
    }

    }

    private ArtifactTransferEvent wrap(TransferEvent event) {
        if (event == null) {
            return null;
        } else {
            String wagon = event.getWagon().getClass().getName();

            ArtifactTransferResource artifact = wrap(event.getWagon().getRepository(), event.getResource());

            ArtifactTransferEvent evt;
            if (event.getException() != null) {

      assertEquals(hashOne, entryOne.getHash());
      assertThat(entryOne.getNext()).isNull();
      assertThat(copyOne.getValue()).isEqualTo(valueOne);

      InternalEntry<Object, Object, ?> copyTwo = segment.copyForTesting(entryTwo, copyOne);
      assertThat(copyTwo.getKey()).isEqualTo(keyTwo);
      assertEquals(hashTwo, copyTwo.getHash());
      assertThat(copyTwo.getNext()).isEqualTo(copyOne);

      assertEquals(hashOne, entryOne.getHash());
      assertThat(entryOne.getNext()).isNull();
      assertThat(copyOne.getValue()).isEqualTo(valueOne);

      InternalEntry<Object, Object, ?> copyTwo = segment.copyForTesting(entryTwo, copyOne);
      assertThat(copyTwo.getKey()).isEqualTo(keyTwo);
      assertEquals(hashTwo, copyTwo.getHash());
      assertThat(copyTwo.getNext()).isEqualTo(copyOne);

        Transformer transformer = factory.newTransformer(new StreamSource(stylesheet));

        System.out.format("=> transformer %s (%s)%n", transformer, transformer.getClass().getName());

        if (destDir.length() > 0) {
            transformer.setParameter("base.dir", destDir + "/");
        }
        FileOutputStream outstr = new FileOutputStream(dest);
        try {

   * consider using {@code collection.getLast()} instead.
   *
   * @return the last element of {@code iterable}
   * @throws NoSuchElementException if the iterable is empty
   */
  @ParametricNullness
  public static <T extends @Nullable Object> T getLast(Iterable<T> iterable) {
    // TODO(kevinb): Support a concurrently modified collection?

     * dependency injection is complete.
     */
    @PostConstruct
    public void register() {
        if (logger.isInfoEnabled()) {
            logger.info("Loaded {}", this.getClass().getSimpleName());
        }
        dictionaryManager.addCreator(this);
    }

    /**
     * Creates a new {@link SynonymFile} instance.
     *

        if (logger.isDebugEnabled()) {
            logger.debug("Loaded ScriptEngine: {}", name);
        }
        scriptEngineMap.put(name.toLowerCase(Locale.ROOT), scriptEngine);
        scriptEngineMap.put(scriptEngine.getClass().getSimpleName().toLowerCase(Locale.ROOT), scriptEngine);
    }

    /**
     * Gets a script engine.
     * @param name The name of the script engine.
     * @return The script engine.
     */

    protected File osddFile;

    /**
     * Initializes the OSDD helper.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", this.getClass().getSimpleName());
        }
        osddFile = getOsddFile();
    }

    /**
     * Gets the OSDD file.
     *
     * @return the OSDD file
     */
    protected File getOsddFile() {