public List<@Nullable V> combine(List<@Nullable Present<V>> values) {
      List<@Nullable V> result = newArrayListWithCapacity(values.size());
      for (Present<V> element : values) {
        result.add(element != null ? element.value : null);
      }
      return unmodifiableList(result);
    }
  }

  /** The result of a successful {@code Future}. */
  private static final class Present<V extends @Nullable Object> {

        String result = ace.toString();

        assertTrue(result.startsWith("Allow "));
        // Hexdump.toHexString produces uppercase hex
        assertTrue(result.toLowerCase().contains("0x001200a9"));
        // ACE.toString() outputs "Direct    " with 4 spaces
        assertTrue(result.contains("Direct"));
        assertTrue(result.contains("This folder only"));
    }

    @Test

    public List<@Nullable V> combine(List<@Nullable Present<V>> values) {
      List<@Nullable V> result = newArrayListWithCapacity(values.size());
      for (Present<V> element : values) {
        result.add(element != null ? element.value : null);
      }
      return unmodifiableList(result);
    }
  }

  /** The result of a successful {@code Future}. */
  private static final class Present<V extends @Nullable Object> {

     * @param partialResults whether the results are partial due to timeout or other constraints
     * @param facetResponse the facet information for the search results
     * @param start the starting position for pagination
     * @param pageSize the size of the current page
     * @param offset the offset applied to the results
     * @return QueryResponseList containing the search results and metadata
     */

            for (boolean result : results) {
                assertEquals(firstResult, result, "All thread results should be consistent");
            }
        }

        @Test
        @DisplayName("Should handle concurrent verify operations efficiently")
        void testConcurrentVerifyPerformance() throws InterruptedException {
            int threadCount = 50;
            int operationsPerThread = 100;

        sessionMap.clear();
    }

    /**
     * Returns a list of access results for the specified URL across all sessions.
     * @param url the URL to search for
     * @return the list of access results for the URL
     */
    public synchronized List<AccessResultImpl<Long>> getAccessResultList(final String url) {
        final List<AccessResultImpl<Long>> acList = new ArrayList<>();

        String result = response.readString(src, 0, src.length);
        assertEquals(expected, result);
    }

    @Test
    void testReadString_Oem() {
        response.useUnicode = false;
        String expected = "test";
        // Simulate OEM encoding with a null terminator
        byte[] src = (expected + "\0").getBytes(StandardCharsets.UTF_8);
        String result = response.readString(src, 0, src.length);

    }

    @Override
    protected <RESULT extends ENTITY> RESULT delegateSelectEntity(final ConditionBean cb, final Class<? extends RESULT> entityType) {
        final List<? extends RESULT> list = delegateSelectList(cb, entityType);
        if (list.isEmpty()) {
            return null;
        }
        if (list.size() >= 2) {

    }

    @Override
    protected <RESULT extends ENTITY> RESULT delegateSelectEntity(final ConditionBean cb, final Class<? extends RESULT> entityType) {
        final List<? extends RESULT> list = delegateSelectList(cb, entityType);
        if (list.isEmpty()) {
            return null;
        }
        if (list.size() >= 2) {

        // Default constructor results in empty strings for user and domain, null for password
        JAASAuthenticator auth = new JAASAuthenticator();
        NameCallback nc = new NameCallback("user:");
        PasswordCallback pc = new PasswordCallback("pass:", false);

        auth.handle(new Callback[] { nc, pc });

        // With empty strings for username and domain, results in "@"
        assertEquals("@", nc.getName());