return System.getProperty(Constants.FESS_LOG_LEVEL, Level.WARN.toString());
    }

    private static final String[] LLM_LOG_PACKAGES =
            { "org.codelibs.fess.llm", "org.codelibs.fess.chat", "org.codelibs.fess.api.chat", "org.codelibs.fess.app.web.chat" };

    /**
     * Sets the log level for LLM-related packages.
     *
     * @param level the log level to set
     */
    public void setLlmLogLevel(final String level) {

    }

    // --- No params: URL unchanged test ---

    @Test
    public void test_NoParams_UrlUnchanged() throws Exception {
        // ## Arrange ##
        String originalUrl = "http://example.com/api/v1/resource";
        final AtomicReference<URL> capturedUrl = new AtomicReference<>();
        CurlRequest req = new OpenOverrideCurlRequest(Curl.Method.GET, originalUrl, u -> {
            capturedUrl.set(u);

    assertThrows(IllegalArgumentException.class, () -> Ordering.explicit(1, 2, 3, 4, 2));
  }

  // A more limited test than the one that follows, but this one uses the
  // actual public API.
  @J2ktIncompatible // Ordering.arbitrary
  public void testArbitrary_withoutCollisions() {
    List<Object> list = new ArrayList<>();
    for (int i = 0; i < 50; i++) {
      list.add(new Object());
    }

       * seen value. And while we *could* do that, we aren't required to: Map.Entry explicitly says
       * that behavior is undefined when the backing map is modified through another API. (It even
       * permits us to throw IllegalStateException. Maybe we should have done that, but we probably
       * shouldn't change now for fear of breaking people.)
       */

    assertThrows(IllegalArgumentException.class, () -> Ordering.explicit(1, 2, 3, 4, 2));
  }

  // A more limited test than the one that follows, but this one uses the
  // actual public API.
  @J2ktIncompatible // Ordering.arbitrary
  public void testArbitrary_withoutCollisions() {
    List<Object> list = new ArrayList<>();
    for (int i = 0; i < 50; i++) {
      list.add(new Object());
    }

   * <p><b>Note:</b> This method simply returns everything after the last '{@code .}' in the file's
   * name as determined by {@link Path#getFileName}. It does not account for any filesystem-specific
   * behavior that the {@link Path} API does not already account for. For example, on NTFS it will
   * report {@code "txt"} as the extension for the filename {@code "foo.exe:.txt"} even though NTFS

 */
@J2ktIncompatible
@GwtCompatible
/*
 * I have decided not to bother adding @ParametricNullness annotations in this class. Adding them is
 * a lot of busy work, and the annotation matters only when the APIs to be annotated are visible to
 * Kotlin code. In this class, nothing is publicly visible (nor exposed indirectly through a
 * publicly visible subclass), and I doubt any of our current or future Kotlin extensions for the

   * {@code x} is {@link Long#MIN_VALUE}, in which case this returns {@link Long#MAX_VALUE}. (Note
   * that {@code Long.MAX_VALUE} is mathematically equal to {@code -Long.MIN_VALUE - 1}.)
   *
   * <p>There are three common APIs for determining the absolute value of a long, all of which
   * behave identically except when passed {@code Long.MIN_VALUE}. Those methods are:
   *
   * <ul>

 */
@J2ktIncompatible
@GwtCompatible
/*
 * I have decided not to bother adding @ParametricNullness annotations in this class. Adding them is
 * a lot of busy work, and the annotation matters only when the APIs to be annotated are visible to
 * Kotlin code. In this class, nothing is publicly visible (nor exposed indirectly through a
 * publicly visible subclass), and I doubt any of our current or future Kotlin extensions for the

    assertThat(popLoggedThrowable()).isSameInstanceAs(t);
  }

  /*
   * TODO(cpovirk): Can we replace makeLocalCache with a call to builder.build()? Some tests may
   * need access to LocalCache APIs, but maybe we can at least make makeLocalCache use
   * builder.build() and then cast?
   */

  private static <K, V> LocalCache<K, V> makeLocalCache(
      CacheBuilder<? super K, ? super V> builder) {