}

    @Override
    public Header authenticate(final Credentials credentials, final HttpRequest request) throws AuthenticationException {
        return null;
    }

    /**
     * Authenticates using the form scheme.
     * @param credentials The credentials.
     * @param executor The executor for HTTP requests.
     */
    public void authenticate(final Credentials credentials,

            }
        }

        formSchemeList.forEach(p -> {
            final FormScheme scheme = p.getFirst();
            final Credentials credentials = p.getSecond();
            scheme.authenticate(credentials, (request, consumer) -> {

                // request header
                for (final Header header : requestHeaderList) {
                    request.addHeader(header);
                }

                }
            }
        }
    }

    /**
     * Creates an NTLM password authenticator from the given SMB authentication.
     *
     * @param smbAuthentication the SMB authentication information
     * @return the NTLM password authenticator
     */
    protected NtlmPasswordAuthenticator getAuthenticator(final SmbAuthentication smbAuthentication) {