assertEquals(0, exception.getSuppressed().length);
        } catch (Exception e) {
            // If an exception is thrown when trying to add suppressed, that's also valid
            // since suppression is disabled
        }

        // Stack trace should be empty since writableStackTrace is false

### Return the error { #return-the-error }

After detecting that the credentials are incorrect, return an `HTTPException` with a status code 401 (the same returned when no credentials are provided) and add the header `WWW-Authenticate` to make the browser show the login prompt again:

    return collection != null && collection.remove(value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean put(@ParametricNullness K key, @ParametricNullness V value) {
    return get(key).add(value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean putAll(@ParametricNullness K key, Iterable<? extends V> values) {
    checkNotNull(values);
    // make sure we only call values.iterator() once

    /**
     * Adds a client with a regular expression pattern at a specific position.
     * @param regex The regular expression to match URLs.
     * @param client The CrawlerClient instance.
     * @param pos The position to add the client.
     */
    public void addClient(final String regex, final CrawlerClient client, final int pos) {
        if (StringUtil.isBlank(regex)) {
            throw new CrawlerSystemException(

    }

    @Test
    void testThroughputCalculation() {
        long initialThroughput = channelInfo.getThroughput();
        assertEquals(0, initialThroughput);

        // Add some data transfer
        channelInfo.addBytesSent(1000);
        channelInfo.addBytesReceived(2000);

        // Wait a bit to ensure time passes
        try {
            Thread.sleep(10);

name: Feature Addition Request
description: I want to add a new feature
labels: ["type=addition"]
body:
  - type: markdown
    attributes:
      value: >
        Filing feature requests is one of the most popular ways to contribute to Guava.


        Be aware, though: most feature requests are not accepted, even if they're suggested by
        a full-time Guava team member. [Feedback](https://stackoverflow.com/a/4543114) from our

    @SuppressWarnings("unchecked")
    @Override
    Collection<E> delegate() {
      return (Collection<E>) super.delegate();
    }

    @Override
    public boolean add(E e) {
      synchronized (mutex) {
        return delegate().add(e);
      }
    }

    @Override
    public boolean addAll(Collection<? extends E> c) {
      synchronized (mutex) {
        return delegate().addAll(c);
      }

   */
  public static <R, C, V> ArrayTable<R, C, V> create(
      Iterable<? extends R> rowKeys, Iterable<? extends C> columnKeys) {
    return new ArrayTable<>(rowKeys, columnKeys);
  }

  /*
   * TODO(jlevy): Add factory methods taking an Enum class, instead of an
   * iterable, to specify the allowed row keys and/or column keys. Note that
   * custom serialization logic is needed to support different enum sizes during

	Expiration          Expiration          `xml:"Expiration,omitempty"`
	Transition          Transition          `xml:"Transition,omitempty"`
	DelMarkerExpiration DelMarkerExpiration `xml:"DelMarkerExpiration,omitempty"`
	// FIXME: add a type to catch unsupported AbortIncompleteMultipartUpload AbortIncompleteMultipartUpload `xml:"AbortIncompleteMultipartUpload,omitempty"`
	NoncurrentVersionExpiration NoncurrentVersionExpiration `xml:"NoncurrentVersionExpiration,omitempty"`

		return
	}

	password := cred.SecretKey

	allCredentials, err := globalIAMSys.ListUsers(ctx)
	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	// Add ldap users which have mapped policies if in LDAP mode
	// FIXME(vadmeste): move this to policy info in the future
	ldapUsers, err := globalIAMSys.ListLDAPUsers(ctx)
	if err != nil && err != errIAMActionNotAllowed {