protected DocumentBuilderFactoryUtil() {
    }

    /**
     * Returns a new instance of {@link DocumentBuilderFactory}.
     *
     * @return A new instance of {@link DocumentBuilderFactory}.
     */
    public static DocumentBuilderFactory newInstance() {
        return newInstance(false);
    }

    /**
     * Returns a new instance of {@link DocumentBuilderFactory}.
     *
     * @param external

        // key = "application/vnd.ms-publisher";
        // assertTrue(extractorFactory.getExtractor(key) instanceof
        // TikaExtractor);

        key = "application/pdf";
        assertTrue(extractorFactory.getExtractor(key) instanceof PdfExtractor);

        key = "application/x-lha";
        assertTrue(extractorFactory.getExtractor(key) instanceof LhaExtractor);

    @SuppressWarnings("unchecked")
    /**
     * Creates a validator instance for form validation.
     * This method uses the system helper to create a validator with Fess-specific messages.
     *
     * @return a new action validator instance
     */
    @Override
    public ActionValidator<FessMessages> createValidator() {

          .put(IndexOutOfBoundsException.class, e -> e instanceof IndexOutOfBoundsException)
          .put(NoSuchElementException.class, e -> e instanceof NoSuchElementException)
          .put(NullPointerException.class, e -> e instanceof NullPointerException)
          .put(NumberFormatException.class, e -> e instanceof NumberFormatException)
          .put(RuntimeException.class, e -> e instanceof RuntimeException)

          .put(IndexOutOfBoundsException.class, e -> e instanceof IndexOutOfBoundsException)
          .put(NoSuchElementException.class, e -> e instanceof NoSuchElementException)
          .put(NullPointerException.class, e -> e instanceof NullPointerException)
          .put(NumberFormatException.class, e -> e instanceof NumberFormatException)
          .put(RuntimeException.class, e -> e instanceof RuntimeException)

          .put(IndexOutOfBoundsException.class, e -> e instanceof IndexOutOfBoundsException)
          .put(NoSuchElementException.class, e -> e instanceof NoSuchElementException)
          .put(NullPointerException.class, e -> e instanceof NullPointerException)
          .put(NumberFormatException.class, e -> e instanceof NumberFormatException)
          .put(RuntimeException.class, e -> e instanceof RuntimeException)

        // Verify that the configuration was queried for notify buffer size
        verify(mockConfig, atLeastOnce()).getNotifyBufferSize();
    }

    @Test
    @DisplayName("Test multiple instances independence")
    void testMultipleInstancesIndependence() {
        NtTransNotifyChange notify1 = new NtTransNotifyChange(mockConfig, 0x1111, FILE_NOTIFY_CHANGE_FILE_NAME, false);

 *
 * OkHttp performs best when you create a single `OkHttpClient` instance and reuse it for all of
 * your HTTP calls. This is because each client holds its own connection pool and thread pools.
 * Reusing connections and threads reduces latency and saves memory. Conversely, creating a client
 * for each request wastes resources on idle pools.
 *
 * Use `new OkHttpClient()` to create a shared instance with the default settings:
 *
 * ```java

#!/bin/bash

# This script is used to test the migration of IAM content from old minio
# instance to new minio instance.
#
# To run it locally, start the LDAP server in github.com/minio/minio-iam-testing
# repo (e.g. make podman-run), and then run this script.
#
# This script assumes that LDAP server is at:
#
#   `localhost:389`
#
# if this is not the case, set the environment variable
# `_MINIO_LDAP_TEST_SERVER`.

        assertNotNull(client);
        assertTrue(client instanceof FaultTolerantClient);
        assertTrue(((FaultTolerantClient) client).getCrawlerClient() instanceof HcHttpClient);

        url = "https://hoge.com/";
        client = clientFactory.getClient(url);
        assertNotNull(client);
        assertTrue(client instanceof FaultTolerantClient);