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<!--Note: this is an XSD 1.1 schema -->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="root" type="rootType"/>
<xs:element name="node" type="nodeType">
<xs:alternative test="@mode='A'" type="nodeA"/>
<xs:alternative test="@mode='B'" type="nodeB"/>
</xs:element>
<xs:complexType name="rootType">
<xs:sequence>
<xs:element ref="node" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="nodeType">
<xs:attribute name="mode" type="allowed-node-types"/>
</xs:complexType>
<xs:simpleType name="allowed-node-types">
<xs:restriction base="xs:string">
<xs:enumeration value="A"/>
<xs:enumeration value="B"/>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="nodeA">
<xs:complexContent>
<xs:extension base="nodeType">
<xs:attribute name="value" type="xs:string" use="required"/>
<xs:anyAttribute />
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="nodeB">
<xs:complexContent>
<xs:extension base="nodeType">
<xs:attribute name="name" type="xs:string" use="required"/>
<xs:anyAttribute processContents="skip"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:schema>
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