<xs:complexType name="IfcClassificationReferenceType">
    <xs:complexContent>
      <xs:extension base="uro:IfcAttributeType">
        <xs:sequence>
          <xs:element name="location" minOccurs="0" type="xs:anyURI"/>
          <xs:element name="itemReference" minOccurs="0" type="gml:CodeType"/>
          <xs:element name="name" minOccurs="0" type="xs:string"/>
          <xs:element name="referencedSource" minOccurs="0" type="uro:IfcClassificationPropertyType"/>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>