}

    @Override
    protected Object getExtensionKey(Extension extension) {
        return extension.getGroupId() + ':' + extension.getArtifactId();
    }

    @Override
    protected Object getExclusionKey(Exclusion exclusion) {
        return exclusion.getGroupId() + ':' + exclusion.getArtifactId();
    }

    protected String extrapolateChildUrl(String parentUrl, boolean appendPath, Map<Object, Object> context) {