public void testAddAll_nullSupported() {
    List<E> containsNull = singletonList(null);
    assertTrue("addAll(containsNull) should return true", collection.addAll(containsNull));
    /*
     * We need (E) to force interpretation of null as the single element of a
     * varargs array, not the array itself
     */
    expectAdded((E) null);
  }

  @CollectionFeature.Require(value = SUPPORTS_ADD, absent = ALLOWS_NULL_VALUES)

   * @return the value that was previously associated with the key, or {@code null} if there was no
   *     previous entry. (If the bimap contains null values, then {@code forcePut}, like {@code
   *     put}, returns {@code null} both if the key is absent and if it is present with a null
   *     value.)
   */
  @CanIgnoreReturnValue
  @CheckForNull

            public String getClassifier() {
                String classifier = dependency.getClassifier();
                if (classifier == null || classifier.isEmpty()) {
                    classifier = getType().getClassifier();
                    if (classifier == null) {
                        classifier = "";
                    }
                }
                return classifier;
            }

            throwValidationErrorApi(messages -> messages.addErrorsCrudCouldNotFindCrudTable(GLOBAL, id));
            return null;
        })).status(Status.OK).result());
    }

    // PUT /api/admin/accesstoken/setting
    @Execute
    public JsonResponse<ApiResult> put$setting(final CreateBody body) {
        validateApi(body, messages -> {});

    initCollectionWithNullElement();
    expectReturnsTrue(disjoint);
    expectContents();
  }

  // retainAll(null)

  /*
   * AbstractCollection fails the retainAll(null) test when the subject
   * collection is empty, but we'd still like to test retainAll(null) when we
   * can. We split the test into empty and non-empty cases. This allows us to
   * suppress only the former.
   */

    List<@Nullable String> list = newArrayList("a", null, "b", null, "a", null);
    assertEquals(2, frequency(list.iterator(), "a"));
    assertEquals(1, frequency(list.iterator(), "b"));
    assertEquals(0, frequency(list.iterator(), "c"));
    assertEquals(0, frequency(list.iterator(), 4.2));
    assertEquals(3, frequency(list.iterator(), null));
  }

  @GwtIncompatible // slow (~4s)

    assertThrows(NullPointerException.class, () -> table.put(null, 2, cellValue('d')));
    assertThrows(NullPointerException.class, () -> table.put("cat", null, cellValue('d')));
    if (supportsNullValues()) {
      assertNull(table.put("cat", 2, null));
      assertTrue(table.contains("cat", 2));
    } else {
      assertThrows(NullPointerException.class, () -> table.put("cat", 2, null));
    }
    assertSize(3);
  }

    protected String name;

    protected String[] permissions = null;

    public LdapUser(final Hashtable<String, String> env, final String name) {
        this.env = env;
        this.name = name;
    }

    @Override
    public String getName() {
        return name;
    }

    @Override
    public String[] getPermissions() {
        if (permissions == null) {

    }
  }

  private inline fun <T> assertOnFileDescriptor(
    content: String? = null,
    fn: (FileDescriptor) -> T,
  ): T {
    return assertOnPath(content) {
      FileInputStream(filePath.toFile()).use { fis ->
        fn(fis.fd)
      }
    }
  }

  private inline fun <T> assertOnPath(
    content: String? = null,
    fn: (okio.Path) -> T,
  ): T {
    FileSystem.SYSTEM.write(filePath) {

        if (resultSet == null) {
            return;
        }
        try {
            resultSet.close();
        } catch (final SQLException e) {
            logger.log(format("ECL0017", e.getMessage()), e);
        }
    }

    /**
     * 結果セットを次に進めます。
     *
     * @param resultSet
     *            結果セット。{@literal null}であってはいけません
     * @return 次に進めたかどうか
     */