castor的使用

XML code

<?xml version="1.0" encoding="UTF-8" standalone="no"?><xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" attributeFormDefault="unqualified" elementFormDefault="qualified">         <xs:element name="persons">        <xs:complexType>            <xs:sequence>                 <xs:element maxOccurs="unbounded" minOccurs="0" ref="person"/>             </xs:sequence>        </xs:complexType>    </xs:element>     <xs:element name="Address">        <xs:complexType>            <xs:sequence>                 <xs:element minOccurs="0" name="code"/>             </xs:sequence>         </xs:complexType>    </xs:element>    <xs:element name="person">        <xs:complexType>            <xs:sequence>                 <xs:element minOccurs="0" ref="name"/>             </xs:sequence>            <xs:attribute name="id" type="xs:string" use="required"/>        </xs:complexType>    </xs:element>    <xs:element name="name" type="xs:string"/> </xs:schema>

生成类：Address.java public class Address implements java.io.Serializable
Person.java public class Person implements java.io.Serializable

想要的结果是：
Address.java public class Address implements java.io.Serializable
public class Person extends Address implements java.io.Serializable

[解决办法]
呵呵 人家都没满意吧！ 那就给我分吧