<example>
      ${fe:base64(value)}
    </example>
  </function>

  <function>
    <description>
      Check if a file exists.
    </description>
    <name>fileExists</name>
    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>
    <function-signature>boolean fileExists(java.lang.String)</function-signature>
    <example>

// Parses all the presigned signature values into separate elements.
func parsePreSignV4(query url.Values, region string, stype serviceType) (psv preSignValues, aec APIErrorCode) {
	// verify whether the required query params exist.
	aec = doesV4PresignParamsExist(query)
	if aec != ErrNone {
		return psv, aec
	}

	// Verify if the query algorithm is supported or not.
	if query.Get(xhttp.AmzAlgorithm) != signV4Algorithm {

		return err
	}

	eventData, eErr := target.store.Get(key)
	if eErr != nil {
		// The last event key in a successful batch will be sent in the channel atmost once by the replayEvents()
		// Such events will not exist and would've been already been sent successfully.
		if os.IsNotExist(eErr) {
			return nil
		}
		return eErr
	}

	if err := target.send(eventData); err != nil {
		if xnet.IsNetworkOrHostDown(err, false) {

        .listFiles()
        ?.filter { it.isDirectory }
        ?.map { it.resolve("tmp-extracted-resources") }
        ?.filter { it.exists() }
        .orEmpty()

    private
    fun TestFilesCleanupProjectState.prepareReportsForCiPublishing(executedTaskPaths: List<String>, tmpTestFiles: Collection<File>) {
        val reports = executedTaskPaths

            if (!Files.isRegularFile(userToolchainsFile)) {
                throw new FileNotFoundException(
                        "The specified user toolchains file does not exist: " + userToolchainsFile);
            }
        } else {
            String userToolchainsFileStr =
                    context.protoSession.getEffectiveProperties().get(Constants.MAVEN_USER_TOOLCHAINS);

    return Iterators.all(iterable.iterator(), predicate);
  }

  /**
   * Returns the first element in {@code iterable} that satisfies the given predicate; use this
   * method only when such an element is known to exist. If it is possible that <i>no</i> element
   * will match, use {@link #tryFind} or {@link #find(Iterable, Predicate, Object)} instead.
   *

        if (configExists() && !force) {
            context.logger.error(messageBuilderFactory
                    .builder()
                    .error("Error: configuration exist. Use --force if you want to reset existing configuration.")
                    .build());
            return BAD_OPERATION;
        }

    return mapEntry(key, value);
  }

  @Override
  protected void expectContents(Collection<Entry<K, V>> expected) {
    // TODO: move this to invariant checks once the appropriate hook exists?
    super.expectContents(expected);
    for (Entry<K, V> entry : expected) {
      assertEquals(
          "Wrong value for key " + entry.getKey(), entry.getValue(), getMap().get(entry.getKey()));
    }
  }

        return methods;
    }

    /**
     * Finds a property by name. Includes inherited properties.
     *
     * @param name The property name.
     * @return The property, or null if no such property exists.
     */
    public PropertyMetaData findProperty(String name) {
        PropertyMetaData propertyMetaData = declaredProperties.get(name);
        if (propertyMetaData != null) {
            return propertyMetaData;

    throw new InvalidObjectException("Use SerializedForm");
  }

  /**
   * Not supported. Use {@link #toImmutableSortedMultiset} instead. This method exists only to hide
   * {@link ImmutableMultiset#toImmutableMultiset} from consumers of {@code
   * ImmutableSortedMultiset}.
   *
   * @throws UnsupportedOperationException always