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<?xml version="1.0" encoding="UTF-8"?>
<!-- Schema test for invalid restricted models: UPA violation restricting a substitution group head. -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element type="xs:string" name="elem1"/>
<xs:element type="xs:string" name="elem2" substitutionGroup="elem1" />
<xs:complexType name="basicType1">
<xs:sequence>
<xs:element ref="elem1" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<!-- Invalid with XSD 1.0, see: https://www.w3.org/Bugs/Public/show_bug.cgi?id=4147 -->
<xs:complexType name="restrictedType0">
<xs:complexContent>
<xs:restriction base="basicType1">
<xs:sequence>
<xs:element ref="elem2"/>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<!-- UPA violation minOccurs < maxOccurs -->
<xs:complexType name="restrictedType1">
<xs:complexContent>
<xs:restriction base="basicType1">
<xs:sequence>
<xs:element ref="elem2" maxOccurs="unbounded"/>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<!-- No UPA violation if the restricted element is empty but elem2 is not a restriction -->
<xs:complexType name="restrictedType2">
<xs:complexContent>
<xs:restriction base="basicType1">
<xs:sequence>
<xs:element ref="elem2" minOccurs="0" maxOccurs="0"/>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:element type="xs:string" name="elem3" abstract="true"/>
<xs:element type="xs:string" name="elem4" substitutionGroup="elem3" />
<xs:complexType name="basicType3">
<xs:sequence>
<xs:element ref="elem3" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<!-- No UPA violation if the head element is abstract (it cannot be used in an instance). -->
<xs:complexType name="restrictedType3">
<xs:complexContent>
<xs:restriction base="basicType3">
<xs:sequence>
<xs:element ref="elem4" maxOccurs="unbounded"/>
</xs:sequence>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:schema>
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