public void testAddAtIndex_nullSupported() {
    getList().add(0, null);
    expectAdded(0, (E) null);
  }

  @ListFeature.Require(SUPPORTS_ADD_WITH_INDEX)
  @CollectionFeature.Require(absent = ALLOWS_NULL_VALUES)
  public void testAddAtIndex_nullUnsupported() {
    assertThrows(NullPointerException.class, () -> getList().add(0, null));
    expectUnchanged();

        days-before-close: 180
        stale-issue-label: "status:stale"
        exempt-issue-labels: 'type:feature,type:with reproduction steps,type:has pull request'
        stale-pr-label: 'status:stale'

            ",state=" + state +
            ",serverChallenge=";
        if (serverChallenge == null) {
            ret += "null";
        } else {
            ret += Hexdump.toHexString(serverChallenge, 0, serverChallenge.length * 2);
        }
        ret += ",signingKey=";
        if (signingKey == null) {
            ret += "null";
        } else {
            ret += Hexdump.toHexString(signingKey, 0, signingKey.length * 2);

# 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:{})

        delete(file);
      }
    }
    filesToDelete.clear();
  }

  private File getTestDir() throws IOException {
    if (testDir != null) {
      return testDir;
    }

    URL testFileUrl = IoTestCase.class.getResource("testdata/i18n.txt");
    if (testFileUrl == null) {
      throw new RuntimeException("unable to locate testdata directory");
    }

    if (testFileUrl.getProtocol().equals("file")) {
      try {

        if (type == int.class) {
            final Integer i = IntegerConversionUtil.toInteger(o);
            if (i != null) {
                return i;
            }
            return Integer.valueOf(0);
        } else if (type == double.class) {
            final Double d = DoubleConversionUtil.toDouble(o);
            if (d != null) {
                return d;
            }
            return new Double(0);

        existNextPage = false;
        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        jobName = null;
        jobStatus = null;
        target = null;
        scriptType = null;
        startTime = null;

    }

    protected int getDefaultCurrentPageNumber() {
        return DEFAULT_CURRENT_PAGE_NUMBER;
    }

    Collection<Entry<K, V>> entries = getSampleEntries(getNumEntries() - 1);
    entries.add(entry(null, v3()));

    resetContainer(getSubjectGenerator().create(entries.toArray()));
    assertTrue(
        "A Map should equal any other Map containing the same entries,"
            + " even if some keys are null.",
        getMap().equals(newHashMap(entries)));
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)

  @Throws(IOException::class)
  override fun authenticate(
    route: Route?,
    response: Response,
  ): Request? {
    if (route == null) throw NullPointerException("route == null")
    responses += response
    routes += route
    if (!schemeMatches(response) || credential == null) return null
    val header =
      when (response.code) {
        407 -> "Proxy-Authorization"
        else -> "Authorization"
      }

     *
     * @param key the key under which to store the session data, must not be {@code null}
     * @param oldValue the expected data currently associated with the key, may be {@code null}
     * @param newValue the data to associate with the key, may be {@code null} to remove the mapping
     * @return {@code true} if the key mapping was successfully updated from the old value to the new value,