2 elementFormDefault=
"qualified"
3 xmlns:xs='http://www.w3.org/
2001/XMLSchema'
5 targetNamespace=
"urn:foo">
7 <xs:element name=
"root">
9 <xs:choice minOccurs=
"0" maxOccurs=
"2">
10 <xs:element name=
"child1" />
11 <xs:element name=
"child2" maxOccurs=
"2" />