private void readFeatures(Element groupElement, GroupDescriptor groupDescriptor, ProductivityFeaturesProvider provider) {
    for (Element featureElement : groupElement.getChildren(TAG_FEATURE)) {
      FeatureDescriptor featureDescriptor = new FeatureDescriptor(groupDescriptor, provider, featureElement);
      addFeature(featureDescriptor);
    }
  }
private void readFeatures(Element groupElement, GroupDescriptor groupDescriptor, ProductivityFeaturesProvider provider)