2 <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
3 targetNamespace="http://example.com/xsd/ns"
4 elementFormDefault="qualified"
5 attributeFormDefault="qualified">
6 <xsd:element name="foo">
9 <xsd:extension base="xsd:string">
10 <xsd:attribute name="id" type="xsd:ID"/>