}
            return result;
        }

        public void merge(org.apache.maven.repository.legacy.metadata.ArtifactMetadata metadata) {
            // not used
        }

        public void merge(ArtifactMetadata metadata) {
            // not used
        }

        Source userSource = request.getUserSettingsSource().orElse(null);
        Settings user = readSettings(userSource, false, request, problems);

        Settings effective =
                settingsMerger.merge(user, settingsMerger.merge(project, global, false, null), false, null);

        // If no repository is defined in the user/global settings,
        // it means that we have "old" settings (as those are new in 4.0)

    private SettingsUtilsV4() {
        // don't allow construction.
    }

    /**
     * @param dominant
     * @param recessive
     */
    public static Settings merge(Settings dominant, Settings recessive) {
        return new SettingsMerger().merge(dominant, recessive, true, Collections.emptyMap());
    }

    /**
     * @param modelProfile
     * @return a profile
     */

                merged.put(key, element);
            }

            for (Repository element : recessive) {
                Object key = getRepositoryKey().apply(element);
                if (!merged.containsKey(key)) {
                    merged.put(key, element);
                }
            }

            builder.repositories(merged.values());
        }
    }

    @Override

        repositoryEventDispatcher.dispatch(event.build());
    }

    private void merge(
            Artifact artifact, Map<String, VersionInfo> infos, Versioning versioning, ArtifactRepository repository) {
        if (versioning.getRelease() != null && !versioning.getRelease().isEmpty()) {
            merge(RELEASE, infos, versioning.getLastUpdated(), versioning.getRelease(), repository);
        }

        for (ArtifactRepositoryPolicy policy : policies) {
            if (effectivePolicy == null) {
                effectivePolicy = new ArtifactRepositoryPolicy(policy);
            } else {
                effectivePolicy.merge(policy);
            }
        }

        return effectivePolicy;
    }

    public Mirror getMirror(ArtifactRepository repository, List<Mirror> mirrors) {

    private SettingsUtilsV4() {
        // don't allow construction.
    }

    /**
     * @param dominant
     * @param recessive
     */
    public static Settings merge(Settings dominant, Settings recessive) {
        return new SettingsMerger().merge(dominant, recessive, true, Collections.emptyMap());
    }

    /**
     * @param modelProfile
     * @return a profile
     */

            Map<String, String> merged = new HashMap<>();
            if (sourceDominant) {
                merged.putAll(target.getProperties());
                putAll(merged, source.getProperties(), CHILD_DIRECTORY_PROPERTY);
            } else {
                putAll(merged, source.getProperties(), CHILD_DIRECTORY_PROPERTY);
                merged.putAll(target.getProperties());
            }

                XmlNode parameterDefaults = defaultConfiguration.getChild(parameter.getName());

                if (parameterConfiguration != null) {
                    parameterConfiguration = parameterConfiguration.merge(parameterDefaults, Boolean.TRUE);
                } else {
                    parameterConfiguration = parameterDefaults;
                }

                if (parameterConfiguration != null) {

          <code><![CDATA[
    private String getSnapshotVersionKey( SnapshotVersion sv )
    {
        return sv.getClassifier() + ":" + sv.getExtension();
    }

    public boolean merge( Metadata sourceMetadata )
    {
        boolean changed = false;

        for ( Plugin plugin : sourceMetadata.getPlugins() )
        {
            boolean found = false;