<xs:complexType name="AbstractRS_ReferenceSystem_Type" abstract="true"><xs:annotation><xs:documentation>Description of the spatial and temporal reference systems used in the dataset</xs:documentation></xs:annotation><xs:complexContent><xs:extension base="gco:AbstractObject_Type"><xs:sequence><xs:element name="name" type="gmd:RS_Identifier_PropertyType"/><xs:element name="domainOfValidity" type="gmd:EX_Extent_PropertyType" minOccurs="0" maxOccurs="unbounded"/></xs:sequence></xs:extension></xs:complexContent></xs:complexType>