wro4j-core/src/main/java/ro/isdc/wro/model/factory/XmlModelFactory.java
private void processGroups(final Document document) {
    // handle imports
    final NodeList groupNodeList = document.getElementsByTagName(TAG_GROUP);
    for (int i = 0; i < groupNodeList.getLength(); i++) {
      final Element groupElement = (Element) groupNodeList.item(i);
      final String name = groupElement.getAttribute(ATTR_GROUP_NAME);
      allGroupElements.put(name, groupElement);
    }
  }
private void processGroups(final Document document) {
    // handle imports
    final NodeList groupNodeList = document.getElementsByTagName(TAG_GROUP);
    for (int i = 0; i < groupNodeList.getLength(); i++) {
      final Element groupElement = (Element) groupNodeList.item(i);
      final String name = groupElement.getAttribute(ATTR_GROUP_NAME);
      allGroupElements.put(name, groupElement);
    }
  }
Initialize the map