<xs:element id="list" name="list" >
  <xs:complexType>
    <xs:annotation>
      <xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-list">
          itemType attribute and simpleType child are mutually
          exclusive, but one or other is required
        </xs:documentation>
    </xs:annotation>
    <xs:complexContent mixed="false">
      <xs:extension base="xs:annotated">
        <xs:sequence>
          <xs:element minOccurs="0" name="simpleType" type="xs:localSimpleType"/>
        </xs:sequence>
        <xs:attribute name="itemType" type="xs:QName" use="optional"/>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
</xs:element>