getModel().setLicenses(licenses);
    }

    public List<License> getLicenses() {
        return getModel().getLicenses();
    }

    public void addLicense(License license) {
        getModel().addLicense(license);
    }

    public void setArtifacts(Set<Artifact> artifacts) {
        this.artifacts = artifacts;

        // flush the calculated artifactMap
        artifactMap = null;