ModelPath childPath = child.getPath();
        if (!getPath().isDirectChild(childPath)) {
            throw new IllegalArgumentException(String.format("Element registration has a path (%s) which is not a child of this node (%s).", childPath, getPath()));
        }

        ModelNodeInternal currentChild = links == null ? null : links.get(childPath.getName());
        if (currentChild != null) {

        String parentPath = extractPath(parent);
        String childPath = path.startsWith("/") ? path.substring(1) : path;
        if (childPath.length() == 0) {
            return parentPath;
        } else if (parentPath.endsWith("/")) {
            return parentPath + childPath;
        } else {
            return parentPath + "/" + childPath;
        }
    }

    private static boolean isFileOnHost(URI uri) {

        Map<Object, Object> hints = new HashMap<>();
        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);
    }

    /**

        ModelPath childPath = modelNode.getPath().child(name);
        ModelRuleDescriptor descriptor = sourceDescriptor.append("create(%s)", name);
        if (initAction != null) {
            doCreate(childPath, type, descriptor, NoInputsModelAction.of(ModelReference.of(childPath, type), descriptor, initAction));
        } else {
            doCreate(childPath, type, descriptor, null);
        }
    }

        Map<Object, Object> hints = new HashMap<>();
        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);
    }

    /**

                }

                boolean missing = matcher.group(1) != null;
                String childPath = matcher.group(3);
                tarEntry = unpackTree(treeName, tree.getType(), tree.getRoot(), tarInput, tarEntry, childPath, missing, snapshots, entries);
            }
        }
        if (originMetadata == null) {

        childSpec.addChildSpecListener((path, spec) -> {
            CopySpecAddress childPath = new DefaultCopySpecAddress(null, DefaultCopySpec.this, additionIndex).append(path);
            fireChildSpecListeners(childPath, spec);
        });

        // Notify upwards of currently existing descendant spec hierarchy

        removedNodes.empty
        addedNodes.empty

        where:
        vfsSpec << (NO_COMMON_PREFIX + COMMON_PREFIX).findAll { allowEmptyChildren || !it.childPaths.empty }
    }

    def "store #fileType child with common prefix adds a new child with the shared prefix of type Directory (#vfsSpec)"() {
        setupTest(vfsSpec)
        def snapshot = Mock(MetadataSnapshot)