}

    // Test edge cases to understand the validation behavior
    public void test_edgeCaseBehavior() {
        String[] edgeCases = { "0 0 25 * * ?", // Invalid day of month
                "0 60 * * * ?", // Invalid minute
                "0 0 0 32 1 ?", // Invalid day
                "0 0 0 1 13 ?", // Invalid month
        };

        for (String cron : edgeCases) {
            boolean result = validator.determineValid(cron);

     * SetView}.
     */
    abstract int minSize();

    /**
     * Returns the {@link #minSize()} of {@code set} if it is a {@link SetView}, or the exact {@link
     * #size()} of {@code set} otherwise.
     */
    static int minSize(Set<?> set) {
      return set instanceof SetView ? ((SetView<?>) set).minSize() : set.size();
    }

    /**

 * The representation of a linear transformation between real numbers {@code x} and {@code y}.
 * Graphically, this is the specification of a straight line on a plane. The transformation can be
 * expressed as {@code y = m * x + c} for finite {@code m} and {@code c}, unless it is a vertical
 * transformation in which case {@code x} has a constant value for all {@code y}. In the
 * non-vertical case, {@code m} is the slope of the transformation (and a horizontal transformation

  }

  /**
   * Returns a {@link SetView} with a {@link SetView#minSize()} of {@code min} and a {@link
   * SetView#maxSize()} of {@code max}.
   */
  private static SetView<Integer> setSizeRange(int min, int max) {
    checkArgument(min >= 0 && max >= min);
    SetView<Integer> set = difference(setSize(max), setSize(max - min));
    checkState(set.minSize() == min && set.maxSize() == max);
    return set;
  }

  /**

  private enum TimeoutsToUse {
    ANY(Timeout.values()),
    PAST(Timeout.MIN, Timeout.MINUS_SMALL, Timeout.ZERO),
    FUTURE(Timeout.SMALL, Timeout.MAX),
    SMALL(Timeout.SMALL),
    FINITE(Timeout.MIN, Timeout.MINUS_SMALL, Timeout.ZERO, Timeout.SMALL),
    INFINITE(Timeout.LARGE, Timeout.MAX);

    final ImmutableList<Timeout> timeouts;

    TimeoutsToUse(Timeout... timeouts) {

    } catch (UnsupportedOperationException expected) {
    }
  }

  /**
   * Verifies that an Iterator is unmodifiable.
   *
   * <p>This test only works with iterators that iterate over a finite set.
   */
  public static void assertIteratorIsUnmodifiable(Iterator<?> iterator) {
    while (iterator.hasNext()) {
      iterator.next();
      try {
        iterator.remove();

                .maximumSize(fessConfig.getSuggestPopularWordCacheSizeAsInteger().longValue())
                .expireAfterWrite(fessConfig.getSuggestPopularWordCacheExpireAsInteger().longValue(), TimeUnit.MINUTES)
                .build();
    }

    /**
     * Retrieves a list of popular words based on the specified search parameters.
     * Uses caching to improve performance for repeated requests.
     *

        .addHeader("Date: " + formatDate(-2, TimeUnit.MINUTES))
        .addHeader("Cache-Control: s-maxage=60")
        .addHeader("Cache-Control: max-age=180")
        .build(),
    )
  }

  @Test
  fun maxAgePreferredOverHigherMaxAge() {
    assertNotCached(
      MockResponse
        .Builder()
        .addHeader("Date: " + formatDate(-2, TimeUnit.MINUTES))
        .addHeader("Cache-Control: s-maxage=180")

    /**
     * Cache for storing available artifacts by type.
     * The cache expires after 5 minutes and has a maximum size of 10 entries.
     */
    protected LoadingCache<ArtifactType, Artifact[]> availableArtifacts = CacheBuilder.newBuilder()
            .maximumSize(10)
            .expireAfterWrite(5, TimeUnit.MINUTES)
            .build(new CacheLoader<ArtifactType, Artifact[]>() {
                @Override

        testBoundaryValue(1L);
        testBoundaryValue(-1L);

        // Test one second boundaries
        testBoundaryValue(1000L);
        testBoundaryValue(-1000L);

        // Test one minute boundaries
        testBoundaryValue(60000L);
        testBoundaryValue(-60000L);

        // Test one hour boundaries
        testBoundaryValue(3600000L);
        testBoundaryValue(-3600000L);