sendToSlack(cardView, discloser);
        sendToGoogleChat(cardView, discloser);
    }

    protected void sendToSlack(final CardView cardView, final SMailPostingDiscloser discloser) {
        // https://api.slack.com/messaging/webhooks#posting_with_webhooks
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String slackWebhookUrls = fessConfig.getSlackWebhookUrls();

    public static final String SEARCH_FILE_PROXY_PROPERTY = "search.file.proxy";

    public static final String NOTIFICATION_TO_PROPERTY = "notification.to";

    public static final String SLACK_WEBHOOK_URLS_PROPERTY = "slack.webhook.urls";

    public static final String GOOGLE_CHAT_WEBHOOK_URLS_PROPERTY = "google.chat.webhook.urls";

    }

    default void setSlackWebhookUrls(final String value) {
        setSystemProperty(Constants.SLACK_WEBHOOK_URLS_PROPERTY, value);
    }

    default String getSlackWebhookUrls() {
        return getSystemProperty(Constants.SLACK_WEBHOOK_URLS_PROPERTY, StringUtil.EMPTY);
    }

    default void setGoogleChatWebhookUrls(final String value) {

  public void testCreateParentDirectories_symlinkParentExists() throws IOException {
    /*
     * We use a fake filesystem to sidestep:
     *
     * - flaky problems with Windows (b/136041958)
     *
     * - the lack of support for symlinks in the default filesystem under Android's desugared
     *   java.nio.file
     */
    try (FileSystem fs = Jimfs.newFileSystem(Configuration.unix())) {
      Path symlink = fs.getPath("linkToDir");

 *
 * @author Colin Decker
 */
public class CharSourceTest extends IoTestCase {

  @AndroidIncompatible // Android doesn't understand suites whose tests lack default constructors.
  public static TestSuite suite() {
    TestSuite suite = new TestSuite();
    for (boolean asByteSource : new boolean[] {false, true}) {
      suite.addTest(
          CharSourceTester.tests(

      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
  }

  /*
   * Whenever an implementation uses `instanceof` on a parameter instance, the test has to know that
   * (so much for "black box") and try instances that both do and don't pass the check. The "don't"
   * half of that is more awkward to arrange...
   */
  private static <T> Iterable<T> iterable(final Collection<T> collection) {

 *
 * @author Colin Decker
 */
public class ByteSourceTest extends IoTestCase {

  @AndroidIncompatible // Android doesn't understand suites whose tests lack default constructors.
  public static TestSuite suite() {
    TestSuite suite = new TestSuite();
    for (boolean asCharSource : new boolean[] {false, true}) {
      suite.addTest(
          ByteSourceTester.tests(

      fail();
    } catch (IndexOutOfBoundsException expected) {
    }
  }

  /*
   * Whenever an implementation uses `instanceof` on a parameter instance, the test has to know that
   * (so much for "black box") and try instances that both do and don't pass the check. The "don't"
   * half of that is more awkward to arrange...
   */
  private static <T> Iterable<T> iterable(final Collection<T> collection) {

/** Unit test for {@link Streams}. */
@GwtCompatible(emulated = true)
@ElementTypesAreNonnullByDefault
public class StreamsTest extends TestCase {
  /*
   * Full and proper black-box testing of a Stream-returning method is extremely involved, and is
   * overkill when nearly all Streams are produced using well-tested JDK calls. So, we cheat and
   * just test that the toArray() contents are as expected.
   */

  // "Basher tests", where we throw a bunch of stuff at a LoadingCache and check basic invariants.

  /**
   * This is a less carefully-controlled version of {@link #testRemovalNotification_clear} - this is
   * a black-box test that tries to create lots of different thread-interleavings, and asserts that
   * each computation is affected by a call to {@code clear()} (and therefore gets passed to the