* are examples of such repositories.
     *
     * @return {@code true} if the repository is backed by actual projects, {@code false} otherwise.
     * @since 3.0-beta-1
     */
    boolean isProjectAware();

    /**
     * @param authentication authentication
     * @since 3.0-alpha-3
     */
    void setAuthentication(Authentication authentication);

    /**

        }

        return artifact;
    }

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

    public boolean isProjectAware() {
        return false;
    }

    public Authentication getAuthentication() {
        return authentication;
    }

    public void setAuthentication(Authentication authentication) {

            return null;
        }

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

        public boolean isProjectAware() {
            return false;
        }

        public void setAuthentication(Authentication authentication) {}

        public Authentication getAuthentication() {
            return null;
        }

    }

    public void setBlacklisted(boolean blackListed) {
        // no op
    }

    public boolean isUniqueVersion() {
        return true;
    }

    public boolean isProjectAware() {
        return false;
    }

    public List<ArtifactRepository> getMirroredRepositories() {
        return mirroredRepositories;
    }