throw new InvalidRepositoryException("URL missing for repository " + id, id);
            }

            ArtifactRepositoryPolicy snapshots = buildArtifactRepositoryPolicy(repo.getSnapshots());

            ArtifactRepositoryPolicy releases = buildArtifactRepositoryPolicy(repo.getReleases());

            return createArtifactRepository(id, url, getLayout(repo.getLayout()), snapshots, releases);
        } else {