<xs:complexType name="categoryReference"><xs:annotation><xs:documentation>Generic type for categories, categoriesSet or categories references.</xs:documentation></xs:annotation><xs:choice><xs:element name="categoryID" type="xs:string"/><xs:element name="categoriesSetID" type="xs:string"/><xs:element name="categoriesSet" type="xmcda:categoriesSet"/></xs:choice></xs:complexType>