我有一個使用 Saxon HE 9.7 進(jìn)行 XML 轉(zhuǎn)換的程序。public String transform() throws TransformerException {    TransformerFactory factory = TransformerFactory.newInstance();    TransformerFactoryImpl tFactoryImpl = (TransformerFactoryImpl) factory;    Configuration saxonConfig = tFactoryImpl.getConfiguration();    Processor processor = (Processor) saxonConfig.getProcessor();    processor.registerExtensionFunction(new Employee());    Source xslt = new StreamSource(new File("mappings.xslt"));    Transformer transformer = factory.newTransformer(xslt);    Source text = new StreamSource(new File("payload.xml"));    transformer.transform(text, new StreamResult(sw));    return sw.toString();}擴(kuò)展功能類：public class Employee implements ExtensionFunction {private List<HashMap<String, String>> employee = new ArrayList<HashMap<String, String>>();private String employeeName = "John";public List<HashMap<String, String>> getEmployee() {    HashMap<String, String> map1 = new HashMap<>();    map1.put("name", "john");    HashMap<String, String> map2 = new HashMap<>();    map2.put("age", "30");    employee.add(map1);    employee.add(map2);    return employee;}public String getEmployeeName(){    return employeeName;}@Overridepublic XdmValue call(XdmValue[] arg0) throws SaxonApiException {    return new XdmAtomicValue(getEmployeeName());}@Overridepublic SequenceType[] getArgumentTypes() {    return new SequenceType[] {};}@Overridepublic QName getName() {    return new QName("test.extension.Employee", "getEmployeeName");}@Overridepublic SequenceType getResultType() {    return SequenceType.makeSequenceType(ItemType.STRING, OccurrenceIndicator.ONE);}目前，我能夠調(diào)用從 xslt 返回字符串的 getEmployeeName 方法。但是我如何修改 Employee 類以也支持返回 HasMap 的 ArrayList 即方法 getEmployee() 因?yàn)樾碌?XdmAtomicValue() 方法不將 ArrayList 作為構(gòu)造函數(shù)參數(shù)。