log.warn("Unknown RDMA provider preference: {}", preference);
            break;
        }

        return null;
    }

    /**
     * Get RDMA provider based on configuration
     *
     * @param config the configuration to read provider preference from
     * @return RDMA provider instance, or null if none available
     */
    public static RdmaProvider getProvider(Configuration config) {

        if (httpClient == null) {
            init();
        }

        if (logger.isDebugEnabled()) {
            logger.debug("Accessing {}", url);
        }

        // start
        AccessTimeoutTarget accessTimeoutTarget = null;
        TimeoutTask accessTimeoutTask = null;
        if (accessTimeout != null) {

        if (available != null) {
            addFieldToSource(sourceMap, "available", available);
        }
        if (boost != null) {
            addFieldToSource(sourceMap, "boost", boost);
        }
        if (createdBy != null) {
            addFieldToSource(sourceMap, "createdBy", createdBy);
        }
        if (createdTime != null) {

        return "[ " + "FROM:("
                + (source == null ? "no source" : (source.md == null ? "no source MD" : source.md.toString())) + ") "
                + "TO:(" + (target == null ? "no target" : (target.md == null ? "no target MD" : target.md.toString()))
                + ") " + "version=" + version + ", scope=" + (scope == null ? "null" : scope.getScope()) + ", depth="
                + depth + "]";
    }

        // When
        Type3Message type3 = new Type3Message(createMockContext(), type2, null, (String) null, null, null, null, 0);

        // Then
        assertNull(type3.getDomain());
        assertNull(type3.getUser());
        assertNull(type3.getWorkstation());
    }

    @Test
    @DisplayName("Should generate session key when requested")

  @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 rootDir the root directory (must not be {@literal null})
     * @param handler the handler to process resources (must not be {@literal null})
     */
    public static void forEach(final File rootDir, final ResourceHandler handler) {
        assertArgumentNotNull("rootDir", rootDir);
        assertArgumentNotNull("handler", handler);

        forEach(rootDir, null, handler);
    }

    /**

        @Test
        @DisplayName("toString should handle null fields")
        void testToString_NullFields() {
            // Given
            CIFSContext mockContext = createMockContext();
            Type2Message message = new Type2Message(mockContext, Type2Message.NTLMSSP_NEGOTIATE_UNICODE, null, null);
            message.setContext(null);
            message.setTargetInformation(null);

            // When

            _dst.enc_ndr_referent(stores, 1);

            if (path != null) {
                _dst = _dst.deferred;
                _dst.enc_ndr_string(path);

            }
            if (comment != null) {
                _dst = _dst.deferred;
                _dst.enc_ndr_string(comment);

            }
            if (stores != null) {
                _dst = _dst.deferred;

                    && targ.getMechanismListMIC() != null) {
                // this indicates that mechlistMIC is required by the server
                verifyMechListMIC(targ.getMechanismListMIC());
                return new NegTokenTarg(NegTokenTarg.UNSPECIFIED_RESULT, null, null, calculateMechListMIC());
            }