return credentials;
    }

    /**
     * Sets the authentication scope.
     *
     * @param authScope the authentication scope to set
     */
    public void setAuthScope(final AuthScope authScope) {
        this.authScope = authScope;
    }

    /**
     * Sets the credentials.
     * @param credentials The credentials to set.
     */

        } else {
            value = Boolean.parseBoolean(obj.toString());
        }

        return value;
    }

    /**
     * Sets a setting value.
     * @param key The key of the setting.
     * @param value The value to set.
     */
    public void set(final String key, final Object value) {
        if (logger.isDebugEnabled()) {

        return this.remaining;
    }

    /**
     * Sets the open timeout value.
     *
     * @param openTimeout
     *            the openTimeout to set
     */
    public final void setOpenTimeout(final int openTimeout) {
        this.openTimeout = openTimeout;
    }

    /**
     * Sets the remaining bytes count.
     *
     * @param remaining

     */
    public byte[] getSignature() {
        return this.signature;
    }

    /**
     * Sets the signature or authentication tag for the encrypted message
     *
     * @param signature
     *            the signature/authentication tag to set
     */
    public void setSignature(final byte[] signature) {
        if (signature.length != 16) {

    }

    /**
     * Sets the MIME type of the content to extract.
     *
     * @param mimeType the MIME type to set
     * @return this builder instance for method chaining
     */
    public ExtractorBuilder mimeType(final String mimeType) {
        this.mimeType = mimeType;
        return this;
    }

    /**
     * Sets the filename of the content to extract.
     *

        }

        /**
         * Sets the URL for this request data.
         *
         * @param url the URL string to be set
         * @return the current RequestDataContext instance for method chaining
         */
        public RequestDataContext url(final String url) {
            data.setUrl(url);
            return this;
        }

        /**
         * Sets the weight for the request data.
         *

      }

    /**
     * Set this certificate to be a signing certificate, with up to `maxIntermediateCas`
     * intermediate signing certificates beneath it.
     *
     * By default this certificate cannot not sign other certificates. Set this to 0 so this
     * certificate can sign other certificates (but those certificates cannot themselves sign

     * @return A <code>boolean</code> indicating whether the flag is set.
     */
    public boolean getFlag(final int flag) {
        return (getFlags() & flag) != 0;
    }

    /**
     * Sets or clears the specified flag.
     *
     * @param flag
     *            The flag to set/clear (i.e.,
     *            <code>NTLMSSP_NEGOTIATE_OEM</code>).
     * @param value

     */
    @Override
    public final Integer getOverrideTimeout() {
        return this.overrideTimeout;
    }

    /**
     * Sets the timeout override for this message block
     * @param overrideTimeout
     *            the overrideTimeout to set
     */
    public final void setOverrideTimeout(final Integer overrideTimeout) {
        this.overrideTimeout = overrideTimeout;
    }

    /**

  }

  protected final <T> Set<T> nodeInvalidatableSet(Set<T> set, N node) {
    return InvalidatableSet.of(
        set, () -> nodes().contains(node), () -> String.format(NODE_REMOVED_FROM_GRAPH, node));
  }

  protected final <T> Set<T> nodePairInvalidatableSet(Set<T> set, N nodeU, N nodeV) {
    return InvalidatableSet.of(
        set,
        () -> nodes().contains(nodeU) && nodes().contains(nodeV),