*/
    public FileTypeHelper() {
        // Default constructor
    }

    /**
     * Initializes the file type mappings by loading configuration from Fess settings.
     * This method is called automatically after dependency injection is complete.
     * The mappings are loaded from the index filetype configuration property,
     * where each line contains a MIME type to file type mapping in the format "mimetype=filetype".

        if (map != null) {
            final String[] queries = map.get(toLowerCase(query));
            if (queries != null) {
                return queries;
            }
        }
        return StringUtil.EMPTY_STRINGS;
    }

    private String toLowerCase(final String term) {
        return term != null ? term.toLowerCase(Locale.ROOT) : term;
    }

            getMap()
                .computeIfAbsent(
                    null,
                    k -> {
                      assertNull(k);
                      return v3();
                    }));
    expectUnchanged();
    expectNullKeyMissingWhenNullKeysUnsupported(
        "Should not contain null key after unsupported computeIfAbsent(null, function)");
  }

In an advanced scenario where you know you need the dependency to be called at every step (possibly multiple times) in the same request instead of using the "cached" value, you can set the parameter `use_cache=False` when using `Depends`:

//// tab | Python 3.10+

```Python hl_lines="1"

    /**
     * Initializes the selected HTTP client.
     * This method should be called after the DI container has injected both clients.
     */
    public void init() {
        if (useHc5) {
            if (hc5Client != null) {
                setCrawlerClient(hc5Client);
            } else {
                logger.warn("HC5 client is null, falling back to HC4 client");
                setCrawlerClient(hc4Client);
            }

     */
    public FacetQueryView() {
        // Default constructor
    }

    /**
     * Initializes the facet query view with default file type queries.
     * This method is called after dependency injection to set up file type facets
     * and register all queries with the FacetInfo component.
     */
    @PostConstruct
    public void init() {

    } catch (NoSuchMethodException e) {
      throw new AssertionError();
    }
  }

  /**
   * Records the provided object in {@link #methodArgument} and sets {@link #methodCalled}. This
   * method is called reflectively by Subscriber during tests, and must remain public.
   *
   * @param arg argument to record.
   */
  @Subscribe
  public void recordingMethod(Object arg) {
    assertFalse(methodCalled);

abstract class AbstractIndexedListIterator<E extends @Nullable Object>
    extends UnmodifiableListIterator<E> {
  private final int size;
  private int position;

  /** Returns the element with the specified index. This method is called by {@link #next()}. */
  @ParametricNullness
  protected abstract E get(int index);

  /**
   * Constructs an iterator across a sequence of the given size whose initial position is 0. That

          boolean haveBeenCalled;

          @Override
          public Integer computeNext() {
            if (haveBeenCalled) {
              throw new AssertionError("Should not have been called again");
            } else {
              haveBeenCalled = true;
              throw sneakyThrow(new SomeCheckedException());
            }
          }
        };

    for (int i = 0; i < n; i++) {
      // requireNonNull is safe because the first `n` elements have been filled in.
      Entry<K, V> e = RegularImmutableMap.makeImmutable(requireNonNull(entryArray[i]));
      entryArray[i] = e;
      V oldValue = forwardDelegate.putIfAbsent(e.getKey(), e.getValue());
      if (oldValue != null) {
        throw conflictException("key", e.getKey() + "=" + oldValue, entryArray[i]);
      }