T result = checkNotNull(itr.next());
      if (!itr.hasNext()) {
        stack.removeLast();
      }
      Iterator<T> childItr = children(result).iterator();
      if (childItr.hasNext()) {
        stack.addLast(childItr);
      }
      return result;
    }
  }

  /**
   * Returns an unmodifiable iterable over the nodes in a tree structure, using post-order

	parent := Parent{}
	DB.Create(&parent)

	child := Child{ParentID: &parent.ID, Parent: &parent, Name: "HasManyCircularReference"}
	child1 := Child{ParentID: &parent.ID, Parent: &parent, Name: "HasManyCircularReference1"}

	parent.Children = []*Child{&child, &child1}
	DB.Save(&parent)

	var children []*Child
	DB.Where("parent_id = ?", parent.ID).Find(&children)

        // load the child project, which inherits from p0...
        MavenProject project1 = getProject(pom1);

        System.out.println("\n\n");
        System.out.println("Child SCM URL is: " + project1.getScm().getUrl());
        System.out.println("Child SCM connection is: " + project1.getScm().getConnection());
        System.out.println(

        return child != null;
    }

    private void filterChildren(int position) {
        for (; position > filteredChildren.size() && filteredIndex < children.size(); filteredIndex++) {
            XmlNode child = children.get(filteredIndex);
            if (testNode(child)) {
                filteredChildren.add(child);
            }
        }
    }

    private boolean testNode(XmlNode node) {
        if (test == null) {

                (parent.tryBlock == child || child in parent.catchClauses) && isUsed(parent)

            // If expressions always use their condition, and the branches are used if the
            // If itself is used as an expression.
            is KtIfExpression ->
                parent.condition == child ||
                        ((parent.then == child ||
                                parent.`else` == child) && isUsed(parent))

        String childPath = child.getProperties().getOrDefault(CHILD_DIRECTORY_PROPERTY, child.getArtifactId());
        hints.put(CHILD_DIRECTORY, childPath);
        hints.put(MavenModelMerger.CHILD_PATH_ADJUSTMENT, getChildPathAdjustment(child, parent, childPath));
        return merger.merge(child, parent, false, hints);
    }

    /**

     * Check that we can build ok from the middle pom of a (parent,child,grandchild) hierarchy
     *
     * @throws Exception in case of issue
     */
    @Test
    void testBuildFromMiddlePom() throws Exception {
        File f1 = getTestFile("src/test/resources/projects/grandchild-check/child/pom.xml");
        File f2 = getTestFile("src/test/resources/projects/grandchild-check/child/grandchild/pom.xml");

        getProject(f1);

<project xmlns="http://maven.apache.org/POM/4.1.0">
  <parent>
    <groupId>org.my.group</groupId>
    <artifactId>parent</artifactId>
  </parent>
  <artifactId>child</artifactId>
  <packaging>jar</packaging>

  <properties>
    <prop-child>bar</prop-child>
  </properties>
  <dependencies>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
    </dependency>
  </dependencies>

    /**
     * Merges values from the specified parent model into the given child model. Implementations are expected to keep
     * parent and child completely decoupled by injecting deep copies of objects into the child rather than the original
     * objects from the parent.
     *
     * @param child The child model into which to merge the values inherited from the parent, must not be
     *            <code>null</code>.

            children = new ArrayList<>();

            for (ProjectBuildingResult result : results) {
                ExceptionSummary child = handle(result);
                if (child != null) {
                    children.add(child);
                }
            }

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