String updates = RepositoryPolicy.UPDATE_POLICY_DAILY;

        if (policy != null) {
            enabled = policy.isEnabled();
            if (policy.getUpdatePolicy() != null) {
                updates = policy.getUpdatePolicy();
            }
            if (policy.getChecksumPolicy() != null) {
                checksums = policy.getChecksumPolicy();
            }
        }

    private static RepositoryPolicy toPolicy(ArtifactRepositoryPolicy policy) {
        RepositoryPolicy result = null;
        if (policy != null) {
            result = new RepositoryPolicy(policy.isEnabled(), policy.getUpdatePolicy(), policy.getChecksumPolicy());
        }
        return result;
    }

    private static Authentication toAuthentication(org.apache.maven.artifact.repository.Authentication auth) {

        if (session != null) {
            request.setOffline(session.isOffline());
            request.setForceUpdate(RepositoryPolicy.UPDATE_POLICY_ALWAYS.equals(session.getUpdatePolicy()));
        }
    }

    @Override
    public ResolutionGroup retrieve(
            Artifact artifact, ArtifactRepository localRepository, List<ArtifactRepository> remoteRepositories)