1<?xml version='1.0' encoding='UTF-8'?> 2<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.test.com" targetNamespace="http://www.test.com" elementFormDefault="qualified" attributeFormDefault="unqualified"> 3 <xs:complexType name="BaseType"> 4 <xs:simpleContent> 5 <xs:extension base="xs:int" /> 6 </xs:simpleContent> 7 </xs:complexType> 8 <xs:complexType name="ChildType"> 9 <xs:complexContent> 10 <xs:extension base="BaseType"> 11 <xs:sequence> 12 <xs:element name="bad" type="xs:int" minOccurs="0" maxOccurs="1"/> 13 </xs:sequence> 14 </xs:extension> 15 </xs:complexContent> 16 </xs:complexType> 17 <xs:element name="Child" type="ChildType" /> 18</xs:schema> 19