2.2.5.7 GUID
The guid type specifies a representation of a GUID value.
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<xs:simpleType name="guid"> <xs:restriction base="xs:string"> <xs:pattern value="[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}" /> </xs:restriction> </xs:simpleType>