return network.isDirected() ? ordered(nodeU, nodeV) : unordered(nodeU, nodeV);
  }

  /**
   * If this {@link EndpointPair} {@link #isOrdered()}, returns the node which is the source.
   *
   * @throws UnsupportedOperationException if this {@link EndpointPair} is not ordered
   */
  public abstract N source();

  /**
   * If this {@link EndpointPair} {@link #isOrdered()}, returns the node which is the target.
   *

        if (mappingItemList == null) {
            reload(null);
        }

        if (offset >= mappingItemList.size() || offset < 0) {
            return new PagingList<>(Collections.<CharMappingItem> emptyList(), offset, size, mappingItemList.size());
        }

        int toIndex = offset + size;
        if (toIndex > mappingItemList.size()) {

		v, err = ParseConfig(strings.NewReader(tc.input))
		if tc.err != err {
			t.Fatalf("Test %d: expected %v but got %v", i+1, tc.err, err)
		}
		if err != nil {
			if tc.err == nil {
				t.Fatalf("Test %d: failed due to %v", i+1, err)
			}
		} else {
			if err := v.Validate(); tc.err != err {
				t.Fatalf("Test %d: validation failed due to %v", i+1, err)
			}
			if len(tc.excludedPrefixes) > 0 {
				var mismatch bool

		pkMap:   map[string]interface{}{},
	}
	err := pubKeys.parseAndAdd(bytes.NewBuffer([]byte(jsonkey)))
	if err != nil {
		t.Fatal("Error loading pubkeys:", err)
	}
	if len(pubKeys.pkMap) != 1 {
		t.Fatalf("Expected 1 keys, got %d", len(pubKeys.pkMap))
	}

	u1, err := xnet.ParseHTTPURL("http://127.0.0.1:8443")
	if err != nil {
		t.Fatal(err)
	}

	provider := providerCfg{}
	provider.JWKS.URL = u1

  # Load those stored pre-existing TFCI_ vars, if any
  if [[ -s "$FROM_ENV" ]]; then
    echo '==TFCI==: NOTE: Loading the following env parameters, which were'
    echo 'already set in the shell environment. If you want to disable this'
    echo 'behavior, create a new shell.'
    cat "$FROM_ENV"
    source "$FROM_ENV"
    rm "$FROM_ENV"
  fi
fi

                    clientMaxWindowBits = value?.toIntOrNull()
                    if (clientMaxWindowBits == null) unexpectedValues = true // Not an int!
                  }
                  name.equals("client_no_context_takeover", ignoreCase = true) -> {
                    if (clientNoContextTakeover) unexpectedValues = true // Repeated parameter!
                    if (value != null) unexpectedValues = true // Unexpected value!

	var scheme string

	// Retrieve the scheme from X-Forwarded-Proto.
	if proto := r.Header.Get(xForwardedProto); proto != "" {
		scheme = strings.ToLower(proto)
	} else if proto = r.Header.Get(xForwardedScheme); proto != "" {
		scheme = strings.ToLower(proto)
	} else if proto := r.Header.Get(forwarded); proto != "" {
		// match should contain at least two elements if the protocol was

      check(!closed) { "closed" }
      if (!hasMoreChunks) return -1

      if (bytesRemainingInChunk == 0L || bytesRemainingInChunk == NO_CHUNK_YET) {
        readChunkSize()
        if (!hasMoreChunks) return -1
      }

      val read = super.read(sink, minOf(byteCount, bytesRemainingInChunk))
      if (read == -1L) {

            Type2Message msg2 = new Type2Message(token);

            if ( log.isTraceEnabled() ) {
                log.trace(msg2.toString());
                log.trace(Hexdump.toHexString(token));
            }

            this.serverChallenge = msg2.getChallenge();

            if ( this.requireKeyExchange ) {

   * @return the same value cast to {@code char} if it is in the range of the {@code char} type,
   *     {@link Character#MAX_VALUE} if it is too large, or {@link Character#MIN_VALUE} if it is too
   *     small
   */
  public static char saturatedCast(long value) {
    if (value > Character.MAX_VALUE) {
      return Character.MAX_VALUE;
    }
    if (value < Character.MIN_VALUE) {
      return Character.MIN_VALUE;