<xs:element name="Code" minOccurs="0"> <xs:annotation> <xs:documentation source="http://www.openapplications.org/oagis">Is the Hazardous Material Code.</xs:documentation> </xs:annotation> <xs:complexType> <xs:simpleContent> <xs:extension base="Code"> <xs:attribute name="issuingAgency" type="xs:string" use="optional" /> </xs:extension> </xs:simpleContent> </xs:complexType> </xs:element>