<?xml version="1.0" encoding="UTF-8"?><xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="unqualified">	<xs:attribute name="Attribute">		<xs:simpleType>			<xs:restriction base="xs:NMTOKEN">				<xs:enumeration value="foo"/>				<xs:enumeration value="bar"/>				<xs:enumeration value="baz"/>			</xs:restriction>		</xs:simpleType>	</xs:attribute>	<xs:element name="Element">		<xs:complexType>			<xs:attribute ref="Attribute" use="required"/>		</xs:complexType>	</xs:element></xs:schema>