请问用XMLSpy的话，怎么实现生成的代码利用该语言的枚举型？

<?xml version="1.0" encoding="UTF-8"?>
<!-- edited with XMLSpy v2008 rel. 2 (http://www.altova.com) by Develop (Develop) -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
 <xs:element name="Data">
  <xs:annotation>
   <xs:documentation>Comment describing your root element</xs:documentation>
  </xs:annotation>
  <xs:complexType>
   <xs:attribute name="Len" type="xs:integer"/>
   <xs:attribute name="Align" type="AlignType"/>
  </xs:complexType>
 </xs:element>
 <xs:simpleType name="AlignType">
  <xs:restriction base="xs:string">
   <xs:enumeration value="alLeft"/>
   <xs:enumeration value="alCenter"/>
   <xs:enumeration value="alRight"/>
  </xs:restriction>
 </xs:simpleType>
</xs:schema>