if (parent != null) {
            String groupId = parent.getGroupId();
            String artifactId = parent.getArtifactId();
            String version = parent.getVersion();

            parentData = getCache(request.getModelCache(), groupId, artifactId, version, ModelCacheTag.RAW);

            if (parentData == null) {
                parentData = readParentLocally(childModel, childSource, request, problems);

        if (session.getCache() == null) {
            return null;
        } else {
            return new DefaultModelCache(session);
        }
    }

    private DefaultModelCache(RepositorySystemSession session) {
        this.session = session;
        this.cache = session.getCache();
    }

    @Override

	public abstract fun connectTimeoutMillis ()I
	public abstract fun connection ()Lokhttp3/Connection;
	public abstract fun getAuthenticator ()Lokhttp3/Authenticator;
	public abstract fun getCache ()Lokhttp3/Cache;
	public abstract fun getCertificatePinner ()Lokhttp3/CertificatePinner;
	public abstract fun getConnectionPool ()Lokhttp3/ConnectionPool;
	public abstract fun getCookieJar ()Lokhttp3/CookieJar;

        String version = artifact.getVersion();

        VersionResult result = new VersionResult(request);

        Key cacheKey = null;
        RepositoryCache cache = session.getCache();
        if (cache != null && !ConfigUtils.getBoolean(session, false, "aether.versionResolver.noCache")) {
            cacheKey = new Key(session, request);

            Object obj = cache.get(session, cacheKey);

	public abstract fun connectTimeoutMillis ()I
	public abstract fun connection ()Lokhttp3/Connection;
	public abstract fun getAuthenticator ()Lokhttp3/Authenticator;
	public abstract fun getCache ()Lokhttp3/Cache;
	public abstract fun getCertificatePinner ()Lokhttp3/CertificatePinner;
	public abstract fun getConnectionPool ()Lokhttp3/ConnectionPool;
	public abstract fun getCookieJar ()Lokhttp3/CookieJar;

	mg.descriptorMap = make(map[MetricName]MetricDescriptor, len(mg.Descriptors))
	for _, desc := range mg.Descriptors {
		mg.descriptorMap[desc.Name] = desc
	}
}

// SetCache is a helper to initialize MetricsGroup. It sets the cache object.
func (mg *MetricsGroup) SetCache(c *metricsCache) {
	mg.cache = c

    }

    //
    // Used by Tycho and will break users and force them to upgrade to Maven 3.1 so we should really leave
    // this here, possibly indefinitely.
    //
    public ArtifactResolutionRequest setCache(RepositoryCache cache) {
        return this;
    }

		if !strings.HasPrefix(string(mg.CollectorPath), clusterBasePath) {
			mg.AddExtraLabels(
				serverName, globalLocalNodeName,
				// poolIndex, strconv.Itoa(globalLocalPoolIdx),
			)
		}
		mg.SetCache(metricsCache)
		if mg.IsBucketMetricsGroup() {
			bucketMGMap[mg.CollectorPath] = mg
		} else {
			mgMap[mg.CollectorPath] = mg
		}
	}

        SessionBuilder sessionBuilder = supplier.get();
        sessionBuilder.setArtifactTypeRegistry(new TypeRegistryAdapter(typeRegistry)); // dynamic
        sessionBuilder.setCache(request.getRepositoryCache());

        // configProps map is kept "pristine", is written ONLY, the mandatory resolver config
        Map<String, Object> configProps = new LinkedHashMap<>();