assertTrue(npe1.getMessage().contains("non-null"));

        NullPointerException npe2 = assertThrows(NullPointerException.class, () -> filter.accept(mockDir, null));
        assertTrue(npe2.getMessage().contains("non-null"));
        verifyNoInteractions(mockDir);
    }

    /**

        final ExtractData extractData = pdfExtractor.getText(in, null);
        final String content = extractData.getContent();
        CloseableUtil.closeQuietly(in);
        logger.info(content);
        assertTrue(content.contains("テスト"));
        assertEquals("Writer", extractData.getValues("Creator")[0]);
        assertEquals("OpenOffice.org 3.0", extractData.getValues("Producer")[0]);

            if (clazz.isInterface() || Modifier.isAbstract(clazz.getModifiers())) { // e.g. BaseAction
                return;
            }
            final String className = clazz.getName();
            if (className.contains(appWebPkg) && className.endsWith(actionSuffix)) {
                // ## Assert ##
                markHere("exists");
                getComponent(clazz); // expect no exception
            }
        });

        String result = exception.toString();
        assertNotNull(result);
        assertTrue(result.contains(ResultOffsetExceededException.class.getName()));
        assertTrue(result.contains(message));
    }

    public void test_multipleInstances() {
        // Test creating multiple instances

    TimeoutException e = assertThrows(TimeoutException.class, () -> testFuture.get(1, NANOSECONDS));
    assertThat(e).hasMessageThat().contains("1 nanoseconds");
    assertThat(e).hasMessageThat().contains("Because this test isn't done");
  }

  public void testToString_completesDuringToString() throws Exception {
    AbstractFuture<Object> testFuture =

                    for (int i = 0; i < operationsPerThread; i++) {
                        try {
                            // Test connection pool operations without actually connecting
                            boolean contains = pool.contains(null); // Should handle gracefully
                            successCount.incrementAndGet();
                        } catch (Exception e) {
                            synchronized (exceptions) {

  @CollectionSize.Require(absent = ZERO)
  public void testRemove_present() {
    getSet().remove(e0());
    assertFalse(
        "After remove(present) a set should not contain the removed element.",
        getSet().contains(e0()));
  }

  @CollectionSize.Require(absent = ZERO)
  public void testRemove_present() {
    getSet().remove(e0());
    assertFalse(
        "After remove(present) a set should not contain the removed element.",
        getSet().contains(e0()));
  }

        override val size: Int = 1

        override fun get(index: Int) = Protocol.HTTP_1_1

        override fun contains(element: Protocol?): Boolean {
          if (element == null) throw NullPointerException()
          return super.contains(element)
        }

        override fun indexOf(element: Protocol?): Int {
          if (element == null) throw NullPointerException()

jobs:
  test_docs:
    permissions:
      checks: write # for actions/upload-artifact
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/master' || contains(github.event.pull_request.labels.*.name, 'documentation')

    steps:
      - name: Checkout
        uses: actions/checkout@v5

      - name: Configure JDK
        uses: actions/setup-java@v5
        with: