<complexType name="RevisionType">
<sequence>
- <element name="id" type="positiveInteger" minOccurs="0" />
+ <element name="id" type="positiveInteger" />
<element name="timestamp" type="dateTime" />
<element name="contributor" type="mw:ContributorType" />
<element name="minor" minOccurs="0" maxOccurs="1" />