MetadataTreeNode parent; // papa

    /** default # of children. Used for tree creation optimization only */
    int nChildren = 8;

    MetadataTreeNode[] children; // of cause

    public int getNChildren() {
        return nChildren;
    }

    public void setNChildren(int children) {
        nChildren = children;
    }

      val children = node.children!!
      var child = children[childIndex]
      if (child == null) {
        child = Node()
        children[childIndex] = child
      }
      node = child
    }

    val shift = 8 - accumulatorBitCount
    val start = (code shl shift) and 0xff
    val end = 1 shl shift
    node.children!!.fill(terminal, start, start + end)
  }

    }

    private static List<String> visitAll(
            Collection<Vertex> children, Map<Vertex, DfsState> stateMap, List<String> list) {
        for (Vertex v : children) {
            DfsState state = stateMap.putIfAbsent(v, DfsState.VISITING);
            if (state == null) {
                visitAll(v.children, stateMap, list);
                stateMap.put(v, DfsState.VISITED);
                list.add(v.label);

    checkNotNull(nodeToChildrenFunction);
    return new TreeTraverser<T>() {
      @Override
      public Iterable<T> children(T root) {
        return nodeToChildrenFunction.apply(root);
      }
    };
  }

  /** Returns the children of the specified node. Must not contain null. */
  public abstract Iterable<T> children(T root);

  /**

                }

                children.add(new ResolutionNode(a, remoteRepositories, this));
            }
            children = Collections.unmodifiableList(children);
        } else {
            children = Collections.emptyList();
        }
        trail = null;
    }

    /**

        this.reference = (reference != null) ? reference : "";
        this.children = (children != null) ? Collections.unmodifiableList(children) : Collections.emptyList();
    }

    public Throwable getException() {
        return exception;
    }

    public String getMessage() {
        return message;
    }

    public String getReference() {
        return reference;
    }

    final List<Tree> children;

    public Tree(char value, Tree... children) {
      super(value);
      this.children = asList(children);
    }
  }

  private static final TreeTraverser<Tree> ADAPTER =
      new TreeTraverser<Tree>() {
        @Override
        public Iterable<Tree> children(Tree node) {
          return node.children;
        }
      };

    if (announceFastAPI) {
        let children = [].slice.call(announceFastAPI.children);
        children = shuffle(children)
        let index = 0
        const announceRandom = () => {
            children.forEach((el, i) => { el.style.display = "none" });
            children[index].style.display = "block"
            index = (index + 1) % children.length
        }
        announceRandom()

     * Starts the visit to the specified dependency node.
     *
     * @param node the dependency node to visit
     * @return <code>true</code> to visit the specified dependency node's children, <code>false</code> to skip the
     *         specified dependency node's children and proceed to its next sibling
     */
    boolean enter(@Nonnull Node node);

    /**
     * Ends the visit to the specified dependency node.
     *

[`Interface.Methods`](/pkg/go/types#Interface.Methods),
[`MethodSet.Methods`](/pkg/go/types#MethodSet.Methods),
[`Named.Methods`](/pkg/go/types#Named.Methods),
[`Scope.Children`](/pkg/go/types#Scope.Children),
[`Struct.Fields`](/pkg/go/types#Struct.Fields),
[`Tuple.Variables`](/pkg/go/types#Tuple.Variables),
[`TypeList.Types`](/pkg/go/types#TypeList.Types),