mirror.setId(repo.getId());
                    mirror.setUrl(repo.getUrl());
                    mirror.setLayout(repo.getContentType());
                    mirror.setBlocked(repo.isBlocked());
                    return mirror;
                }
            }
        }
        return null;
    }

            return null;
        }

        public String pathOfRemoteRepositoryMetadata(ArtifactMetadata artifactMetadata) {
            return null;
        }

        public String pathOfLocalRepositoryMetadata(ArtifactMetadata metadata, ArtifactRepository repository) {
            return null;
        }

        public String getUrl() {
            return repository.getUrl();

        if (r1 == r2) {
            return true;
        }

        return Objects.equals(r1.getId(), r2.getId())
                && Objects.equals(r1.getUrl(), r2.getUrl())
                && repositoryPolicyEquals(r1.getReleases(), r2.getReleases())
                && repositoryPolicyEquals(r1.getSnapshots(), r2.getSnapshots());
    }

                return;
            }
            baseName = ArtifactIdUtils.toId(collectStepTrace.getPath().get(0).getArtifact())
                    .replace(":", "_");
            trackingFile = trackingDir.resolve(baseName + ext);
            if (Files.exists(trackingFile)) {
                return;
            }

                .url(modelRepo.getUrl())
                .snapshots(modelRepo.getSnapshots() != null ? convertRepositoryPolicy(modelRepo.getSnapshots()) : null)
                .releases(modelRepo.getReleases() != null ? convertRepositoryPolicy(modelRepo.getReleases()) : null)
                .build();

        return repo;
    }

    /**
     * @param modelPolicy
     * @return a RepositoryPolicy
     */

                                + " (" + repository.getUrl() + ")");
            }

            return false;
        }

        if (getLogger().isDebugEnabled()) {
            getLogger()
                    .debug("Determining update check for " + artifact + " (" + file + ") from " + repository.getId()
                            + " (" + repository.getUrl() + ")");
        }

        if (file == null) {

        artifact.setFile(artifactFile);

        return artifact;
    }

    public List<String> findVersions(Artifact artifact) {
        return Collections.emptyList();
    }

    public String getId() {
        return id;
    }

    public String getUrl() {
        return url;
    }

    public String getBasedir() {
        return basedir;
    }

    public String getProtocol() {

    protected boolean isSiteEmpty(Site site) {
        return (site.getId() == null || site.getId().isEmpty())
                && (site.getName() == null || site.getName().isEmpty())
                && (site.getUrl() == null || site.getUrl().isEmpty());
    }

    @Override
    protected void mergeSite_Url(

        if (!validateNotNull(problems, fieldName, string, sourceHint)) {
            return false;
        }

        if (!string.isEmpty()) {
            return true;
        }

        addViolation(problems, BuilderProblem.Severity.ERROR, fieldName, sourceHint, "is missing");

        return false;
    }

    /**
     * Asserts:
     * <p/>
     * <ul>

        if (p1 == p2) {
            return true;
        }
        // update policy doesn't affect contents
        return p1.isEnabled() == p2.isEnabled() && Objects.equals(p1.getChecksumPolicy(), p2.getChecksumPolicy());
    }

    private static boolean repositoryEquals(RemoteRepository r1, RemoteRepository r2) {
        if (r1 == r2) {
            return true;
        }

        return Objects.equals(r1.getId(), r2.getId())