func (e *dataUsageEntry) addChild(hash dataUsageHash) {
	if _, ok := e.Children[hash.Key()]; ok {
		return
	}
	if e.Children == nil {
		e.Children = make(dataUsageHashMap, 1)
	}
	e.Children[hash.Key()] = struct{}{}
}

// Create a clone of the entry.
func (e dataUsageEntry) clone() dataUsageEntry {
	// We operate on a copy from the receiver.
	if e.Children != nil {
		ch := make(dataUsageHashMap, len(e.Children))

     *
     * @param name the name for the new node
     * @param children the list of child nodes
     * @return a new XmlNode instance
     * @throws NullPointerException if name is null
     */
    static XmlNode newInstance(String name, List<XmlNode> children) {
        return newBuilder().name(name).children(children).build();
    }

    /**

            assertNotNull(subprojects);

            // Verify module elements were renamed to subproject
            var moduleElements = subprojects.children("module").toList();
            var subprojectElements = subprojects.children("subproject").toList();
            assertEquals(0, moduleElements.size());
            assertEquals(2, subprojectElements.size());

    private void wrapContentInContainer(Document document) {
        // Wrap the page in a text container to get the margins
        Elements bodyContent = document.body().children().remove();
        document.body().prepend("<div class='container'/>");
        document.body().children().get(0).html(bodyContent.outerHtml());
    }

    private void addTOC(Document document) {

                if (child != null) {
                    children.add(child);
                }
            }

            message = "The build could not read " + children.size() + " project" + (children.size() == 1 ? "" : "s");
        } else {
            message = getMessage(message, exception);
        }

        return new ExceptionSummary(exception, message, reference, 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)
  }

     *
     * @param children
     *            The child nodes. Must not be {@literal null}.
     * @param buf
     *            The string buffer. Must not be {@literal null}.
     */
    public static void appendChildren(final NodeList children, final StringBuilder buf) {
        assertArgumentNotNull("children", children);
        assertArgumentNotNull("buf", buf);

          if (listSelNum < 0) {
            listSelNum = listNum;
          } else if (listSelNum > listNum) {
            listSelNum = 0;
          }

          var $items = $boxElement.children("ol").children("li");
          $items.each(function (i) {
            var $item = $(this);
            var isSelected = i === listSelNum - 1;
            applyListItemStyle($item, isSelected);

     */
    @Override
    void close();

    /**
     * Fetch all children
     *
     * @return an iterator over the child resources
     * @throws CIFSException if an error occurs accessing the resource
     */
    CloseableIterator<SmbResource> children() throws CIFSException;

    /**
     * Fetch children matching pattern, server-side filtering
     *
     * <p>

                context.detail("Removed: redundant subprojects list (matches direct children)");
                hasChanges = true;
            }
        }

        // Check profiles for subprojects
        boolean profileSubprojectsChanges = root.child(PROFILES).stream()
                .flatMap(profiles -> profiles.children(PROFILE))
                .map(profile -> profile.child(SUBPROJECTS)