<xs:complexType name="ClosureSurfaceType">
	<xs:annotation>
		<xs:documentation>Virtual surface which can be used to define the volume of geometric objects being not totally bounded by
			real surfaces (e. g. the entrance of an open Tunnel).</xs:documentation>
	</xs:annotation>
	<xs:complexContent>
		<xs:extension base="AbstractBoundarySurfaceType">
			<xs:sequence>
				<xs:element ref="_GenericApplicationPropertyOfClosureSurface" minOccurs="0" maxOccurs="unbounded"/>
			</xs:sequence>
		</xs:extension>
	</xs:complexContent>
</xs:complexType>