Document doc = MXml.loadXml(xml);
XmlConfig src = new XmlConfig(doc.getDocumentElement());
HashConfig tar1 = new HashConfig();
JsonConfig tar2 = new JsonConfig();
XmlConfig tar3 = new XmlConfig();
builder.cloneConfig(src, tar1);
builder.cloneConfig(src, tar2);
builder.cloneConfig(src, tar3);