public static Set<String> getAllDefinedCons() {
    final Set<String> allCons = new HashSet<>();
    allCons.add(EclipseXml.GROOVY_SUPPORT);
    allCons.add(EclipseXml.GROOVY_DSL_CONTAINER);

    for (EclipseNatureImporter provider : EP_NAME.getExtensionList()) {
      allCons.addAll(provider.getProvidedCons());
    }
    return allCons;
  }
public static Set<String> getAllDefinedCons()