public List<String> getExportedPackages() {
        if (exportedPackages == null) {
            exportedPackages = new ArrayList<>();
        }

        return exportedPackages;
    }

    public void setExportedPackages(List<String> exportedPackages) {
        if (exportedPackages == null) {
            this.exportedPackages = null;
        } else {
            this.exportedPackages = new ArrayList<>(exportedPackages);
        }

        }

        if (!"extension".equals(dom.name())) {
            throw new IOException("Unexpected root element \"" + dom.name() + "\", expected \"extension\"");
        }

        extensionDescriptor.setExportedPackages(parseStrings(dom.child("exportedPackages")));

        extensionDescriptor.setExportedArtifacts(parseStrings(dom.child("exportedArtifacts")));

        return extensionDescriptor;
    }