1<?xml version="1.0"?> 2<xs:schema id="foo" xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema"> 3 <xs:element name="inner"> 4 <xs:complexType> 5 <xs:sequence> 6 <xs:element name="a" type="xs:double" minOccurs="1" /> 7 <xs:element name="b" type="xs:double" minOccurs="1" /> 8 </xs:sequence> 9 </xs:complexType> 10 </xs:element> 11 <xs:element name="outer"> 12 <xs:complexType> 13 <xs:sequence> 14 <xs:element ref="inner" minOccurs="0" maxOccurs="unbounded" /> 15 <xs:element name="c" type="xs:double" minOccurs="1" /> 16 </xs:sequence> 17 </xs:complexType> 18 </xs:element> 19</xs:schema> 20