<xs:simpleType name="Genre">
  <xs:restriction base="xs:string">
    <xs:enumeration value="M">
      <xs:annotation>
        <xs:documentation>Masculin</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
    <xs:enumeration value="F">
      <xs:annotation>
        <xs:documentation>Féminin</xs:documentation>
      </xs:annotation>
    </xs:enumeration>
  </xs:restriction>
</xs:simpleType>