* the dependency will be unconditionally placed on the specified type of path
     * and no heuristic rule will be involved.
     *
     * <p>It is nevertheless common to specify two or more types of path. For example,
     * a Java library may be compatible with either the class-path or the module-path,
     * and the user may have provided no instruction about which type to use. In such

/**
 * A test which demonstrates maven's recursive inheritance where
 * a distinct value is taken from each parent contributing to
 * the final model of the project being assembled. There is no
 * overriding going on amongst the models being used in this test:
 * each model in the lineage is providing a value that is not present
 * anywhere else in the lineage. We are just making sure that values

    public Model getModel() {
        return model;
    }

    /**
     * Returns the project corresponding to a declared parent.
     *
     * @return the parent, or null if no parent is declared or there was an error building it
     */
    public MavenProject getParent() {
        return parent;
    }

    public void setParent(MavenProject parent) {
        this.parent = parent;

        return objects.stream()
                .filter(type::isInstance)
                .map(type::cast)
                .findAny()
                .orElseThrow(() -> new LookupException("No service of type " + type));
    }

    @Override
    public <T> T lookup(Class<T> type, String name) {
        return null;
    }

    @Override
    public <T> Optional<T> lookupOptional(Class<T> type) {

            if (validationReportLevel == ValidationReportLevel.VERBOSE) {
                logger.warn(
                        "Fix reported issues by adjusting plugin configuration or by upgrading above listed plugins. If no upgrade available, please notify plugin maintainers about reported issues.");
            }
            logger.warn(

            } else {
                sb.append("      no entries\n");
            }

            List<MetadataGraphEdge> outs = getExcidentEdges(v);
            if (outs != null) {
                for (MetadataGraphEdge e : outs) {
                    sb.append("        to :  ").append(e.toString()).append('\n');
                }
            } else {
                sb.append("      no exit\n");
            }

    private List<ArtifactRepository> remoteRepositories;

    /**
     * Creates an empty repository request.
     */
    public DefaultRepositoryRequest() {
        // enables no-arg constructor
    }

    /**
     * Creates a shallow copy of the specified repository request.
     *
     * @param repositoryRequest The repository request to copy from, must not be {@code null}.
     */

                                // MNG-2123: if the previous node was not a range, then it wouldn't have any available
                                // versions. We just clobbered the selected version above. (why? I have no idea.)
                                // So since we are here and this is ranges we must go figure out the version (for a
                                // third time...)

        if (mojoDescriptor.isProjectRequired() && !session.getRequest().isProjectPresent()) {
            Throwable cause = new MissingProjectException(
                    "Goal requires a project to execute" + " but there is no POM in this directory ("
                            + session.getExecutionRootDirectory() + ")."
                            + " Please verify you invoked Maven from the correct directory.");

            if (versionRangeResult.getHighestVersion() == null) {
                throw new UnresolvableModelException(
                        String.format(
                                "No versions matched the requested parent version range '%s'", parent.getVersion()),
                        parent.getGroupId(),
                        parent.getArtifactId(),
                        parent.getVersion());