assertTrue(s1.isEmpty());
            // isBlank will fail if sub_authority is null, so we skip that check for s1

            // All-zero subauthorities
            byte[] ident = new byte[] { 0, 0, 0, 0, 0, 0 };
            rpc.sid_t st = buildSidT((byte) 1, ident, 0, 0);
            SID s2 = new SID(st, jcifs.SID.SID_TYPE_USE_NONE, null, null, false);
            assertFalse(s2.isEmpty());
            assertTrue(s2.isBlank());

                null,
                dependency.getType()));
    }

    @Nonnull
    default DependencyCoordinates create(@Nonnull Session session, Plugin plugin) {
        // TODO: hard coded string
        return create(DependencyCoordinatesFactoryRequest.build(
                session, plugin.getGroupId(), plugin.getArtifactId(), plugin.getVersion(), null, null, "maven-plugin"));
    }

    @Nonnull

        this.open = false;
        if (this.input != null) {
            this.input.close();
            this.input = null;
        }

        if (this.output != null) {
            this.output.close();
            this.output = null;
        }

        try {
            if (wasOpen) {
                this.handle.close();
            } else if (this.handle != null) {
                this.handle.release();

      throws InvocationTargetException, IllegalAccessException {
    T returnValue = factory.invoke(null, args.toArray());
    if (returnValue == null) {
      Assert.assertTrue(
          factory + " returns null but it's not annotated with @Nullable", isNullable(factory));
    }
    return returnValue;
  }

  /**

        if (esCb.getPreference() != null) {
            builder.setPreference(esCb.getPreference());
        }
        esCb.request().build(builder);
        SearchResponse response = esCb.build(builder).execute().actionGet(scrollSearchTimeout);
        String scrollId = response.getScrollId();
        try {
            while (scrollId != null) {

# o extendedDBFluteInitializerClass: (NotRequired - Default null)
# o shortCharHandlingMode: (NotRequired - Default NONE)
# o quoteTableNameList: (NotRequired - Default list:{})
# o quoteColumnNameList: (NotRequired - Default list:{})
# o columnNullObjectMap: (NotRequired - Default map:{})
# o relationalNullObjectMap: (NotRequired - Default map:{})
# o cursorSelectFetchSize: (NotRequired - Default null)
# o refreshMap: (NotRequired - Default map:{})

    Map<C, V> row = safeGet(rowMap(), rowKey);
    return row != null && Maps.safeContainsKey(row, columnKey);
  }

  @Override
  public @Nullable V get(@Nullable Object rowKey, @Nullable Object columnKey) {
    Map<C, V> row = safeGet(rowMap(), rowKey);
    return (row == null) ? null : safeGet(row, columnKey);
  }

  @Override
  public boolean isEmpty() {
    return size() == 0;
  }

        // This should return null
        Object result = WebApiUtil.getObject("testKey");
        assertNull("getObject should return null when no request available", result);
    }

    public void test_getObject_withNullName() {
        // Test getObject with null name
        Object result = WebApiUtil.getObject(null);
        assertNull("getObject should return null for null name", result);
    }

        assertEquals(1, chain3.updateCallCount);
    }

    // Test addChain null handling
    public void test_addChain_withNull() {
        // ArrayUtils.addAll handles null gracefully by adding it to the array
        authenticationManager.addChain(null);

        // Verify null chain doesn't cause issues during operations
        User user = createTestUser("testuser");
        try {

    @Test
    @DisplayName("Test sign method with null request and response")
    void testSignWithNullMessages() {
        // Arrange
        int offset = 0;
        int length = testData.length;

        // Act
        signingDigest.sign(testData, offset, length, null, null);

        // Assert
        verify(signingDigest, times(1)).sign(testData, offset, length, null, null);
    }

    @Test