private void parseCopyByReferences(Element ele, DozerBuilder.ConfigurationBuilder config) {
        NodeList nl = ele.getChildNodes();
        for (int i = 0; i < nl.getLength(); i++) {
            Node node = nl.item(i);
            if (node instanceof Element) {
                Element element = (Element)node;

                debugElement(element);

                if (COPY_BY_REFERENCE.equals(element.getNodeName())) {
                    String typeMask = getNodeValue(element);
                    config.copyByReference(typeMask);
                }
            }
        }
    }
Builds object representation of mappings based on content of Xml document

@return mapping container
core/src/main/java/com/github/dozermapper/core/loader/xml/XMLParser.java