// Assert that escapers throw null pointer exceptions.
    try {
      escaper.escape((String) null);
      Assert.fail("exception not thrown when escaping a null string");
    } catch (NullPointerException e) {
      // pass
    }
  }

  /**
   * Asserts that an escaper escapes the given character into the expected string.
   *
   * @param escaper the non-null escaper to test

        ComponentUtil.register(null, "scriptEngineFactory");

        try {
            testScriptEngine.register();
            fail("Should throw exception when factory is null");
        } catch (NullPointerException e) {
            // Expected exception
        }
    }

    // Test concrete implementation with different name
    public void test_differentNameImplementation() {

    void testMethodsWithNullBuffers() {
        netShareEnum = new NetShareEnum(realConfig);

        // Write methods return 0 when buffer is null (no NullPointerException thrown)
        assertEquals(0, netShareEnum.writeSetupWireFormat(null, 0));

        assertThrows(NullPointerException.class, () -> {
            netShareEnum.writeParametersWireFormat(null, 0);
        });

  public void testGetNullAbsent() {
    assertEmpty(multimap().get(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
  public void testGetNullForbidden() {
    assertThrows(NullPointerException.class, () -> multimap().get(null));
  }

  @MapFeature.Require(ALLOWS_NULL_VALUES)
  @CollectionSize.Require(absent = ZERO)
  public void testGetWithNullValue() {
    initMultimapWithNullValue();

  /**
   * A collector that converts a stream of zero or one elements to an {@code Optional}.
   *
   * @throws IllegalArgumentException if the stream consists of two or more elements.
   * @throws NullPointerException if any element in the stream is {@code null}.
   * @return {@code Optional.of(onlyElement)} if the stream has exactly one element (must not be
   *     {@code null}) and returns {@code Optional.empty()} if it has none.
   */

    assertNull(multimap().asMap().get(null));
  }

  @MapFeature.Require(absent = ALLOWS_NULL_KEY_QUERIES)
  public void testAsMapGetNullKeyUnsupported() {
    assertThrows(NullPointerException.class, () -> multimap().asMap().get(null));
  }

  @CollectionSize.Require(absent = ZERO)
  @MapFeature.Require(SUPPORTS_REMOVE)
  public void testAsMapRemove() {

        assertThrows(IllegalArgumentException.class, () -> {
            DialectVersion.valueOf("INVALID");
        });

        // Test valueOf with null
        assertThrows(NullPointerException.class, () -> {
            DialectVersion.valueOf(null);
        });
    }

    @Test
    @DisplayName("Should maintain SMB2 flag consistency")
    void testSMB2FlagConsistency() {

    assertEquals(7, (int) newValue);

    // Won't compile: map.putInstance(Double.class, new Long(42));
  }

  public void testNull() {
    assertThrows(NullPointerException.class, () -> map.put(null, new Integer(1)));
    map.putInstance(Integer.class, null);
    assertNull(map.get(Integer.class));
    assertNull(map.getInstance(Integer.class));

    map.put(Long.class, null);

    public void test_constructor_nullConfig() {
        try {
            new FessTimeResourceProvider(null);
            // Constructor may accept null, so test continues
            assertTrue(true);
        } catch (NullPointerException e) {
            // Expected if constructor validates input
            assertTrue(true);
        }
    }

    // Test with different time adjustments
    public void test_withDifferentTimeAdjustments() {

   * Objects.equals(o, element)} would return {@code true}. Otherwise returns {@code false}, even in
   * cases where {@link Collection#contains} might throw {@link NullPointerException} or {@link
   * ClassCastException}.
   */
  public static boolean contains(Iterable<?> iterable, @Nullable Object element) {
    if (iterable instanceof Collection) {