/**
   * A value class representing single connection between the origin node and another node.
   *
   * <p>There can be two types of connections (predecessor and successor), which is represented by
   * the two implementations.
   */
  private abstract static class NodeConnection<N> {
    final N node;

    NodeConnection(N node) {
      this.node = checkNotNull(node);
    }

    static final class Pred<N> extends NodeConnection<N> {

         },
         "description": "Total requests in the cluster",
         "fieldConfig": {
            "defaults": {
               "color": {
                  "fixedColor": "blue",
                  "mode": "fixed"
               },
               "custom": {
                  "fillOpacity": 10,
                  "gradientMode": "hue",
                  "showPoints": "never"
               },

  }

  @Override
  public Set<N> adjacentNodes(N node) {
    return delegate().adjacentNodes(node);
  }

  @Override
  public Set<N> predecessors(N node) {
    return delegate().predecessors(node);
  }

  @Override
  public Set<N> successors(N node) {
    return delegate().successors(node);
  }

  @Override
  public Set<EndpointPair<N>> incidentEdges(N node) {
    return delegate().incidentEdges(node);
  }

  }

  @Override
  public Set<N> adjacentNodes(N node) {
    return delegate().adjacentNodes(node);
  }

  @Override
  public Set<N> predecessors(N node) {
    return delegate().predecessors(node);
  }

  @Override
  public Set<N> successors(N node) {
    return delegate().successors(node);
  }

  @Override
  public Set<EndpointPair<N>> incidentEdges(N node) {
    return delegate().incidentEdges(node);
  }

#                                                                                    Core
#                                                                                   ======
# The mode of Lasta Di's smart-deploy, should be cool in production (e.g. hot, cool, warm)
lasta_di.smart.deploy.mode = cool

# Is development environment here? (used for various purpose, you should set false if unknown)
development.here = false

        nodes.each { node ->
            format(node, builder, 0, prettyPrint, prettyPrint)
        }
        return builder.toString()
    }

    def format(Node node, Appendable target, int depth, boolean prettyPrint, boolean indentSelf) {
        if (node instanceof Element) {
            Element element = (Element) node

            if (indentSelf && depth > 0) {
                target.append('\n')

        }
    }

    public static JapaneseTokenizer.Mode getMode(Settings settings) {
        JapaneseTokenizer.Mode mode = JapaneseTokenizer.DEFAULT_MODE;
        String modeSetting = settings.get("mode", null);
        if (modeSetting != null) {
            if ("search".equalsIgnoreCase(modeSetting)) {
                mode = JapaneseTokenizer.Mode.SEARCH;
            } else if ("normal".equalsIgnoreCase(modeSetting)) {

                .get(stream -> stream.map(String::trim).filter(StringUtil::isNotEmpty).toArray(n -> new String[n]));
        nodeManager = new NodeManager(hosts, node -> request(new CurlRequest(Method.GET, node.getUrl("/"))));
        nodeManager.setHeartbeatInterval(fessConfig.getFesenHeartbeatInterval());
    }

    public CurlRequest get(final String path) {

    protected void parseTextContent(final Node node, final StringBuilder buf) {
        if (node.hasChildNodes()) {
            final NodeList nodeList = node.getChildNodes();
            for (int i = 0; i < nodeList.getLength(); i++) {
                final Node childNode = nodeList.item(i);
                parseTextContent(childNode, buf);
            }
        } else if (node.getNodeType() == Node.TEXT_NODE) {

      @Override
      public Set<N> adjacentNodes(N node) {
        return AbstractValueGraph.this.adjacentNodes(node);
      }

      @Override
      public Set<N> predecessors(N node) {
        return AbstractValueGraph.this.predecessors(node);
      }

      @Override
      public Set<N> successors(N node) {
        return AbstractValueGraph.this.successors(node);
      }

      @Override