@Override
    public ArtifactFilter getCoreArtifactFilter() {
        return new ExclusionSetFilter(getCoreArtifactExcludes());
    }

    @Override
    public void excludeArtifact(String artifactId) {
        getExcludedArtifacts().add(artifactId);
    }

    @Override
    public Set<String> getCoreArtifactExcludes() {
        Set<String> excludes = new LinkedHashSet<>(coreArtifacts);

     *             extensions.
     */
    @Deprecated
    void excludeArtifact(String artifactId);

    Set<String> getCoreArtifactExcludes();