<xs:complexType name="base64Binary"> <xs:simpleContent> <xs:extension base="xs:base64Binary"> <xs:attribute ref="xmime:contentType"/> </xs:extension> </xs:simpleContent> </xs:complexType>
<xs:complexType name="hexBinary"> <xs:simpleContent> <xs:extension base="xs:hexBinary"> <xs:attribute ref="xmime:contentType"/> </xs:extension> </xs:simpleContent> </xs:complexType>
<xs:attribute name="contentType"> <xs:simpleType> <xs:restriction base="xs:string"> <xs:minLength value="3"/> </xs:restriction> </xs:simpleType> </xs:attribute>
<xs:attribute name="expectedContentTypes" type="xs:string"/>