A property that has a geometric complex as its value domain may either be an appropriate geometry element encapsulated in an element of this type or an XLink reference to a remote geometry element (where remote includes geometry elements located elsewhere in the same document). Either the reference or the contained element shall be given, but neither both nor none.

<complexType name="GeometricComplexPropertyType">
    <annotation>
        <documentation>A property that has a geometric complex as its value domain may either be an appropriate geometry element encapsulated in an element of this type or an XLink reference to a remote geometry element (where remote includes geometry elements located elsewhere in the same document). Either the reference or the contained element shall be given, but neither both nor none.</documentation>
    </annotation>
    <sequence minOccurs="0">
        <choice>
            <element ref="gml:GeometricComplex" />
            <element ref="gml:CompositeCurve" />
            <element ref="gml:CompositeSurface" />
            <element ref="gml:CompositeSolid" />
        </choice>
    </sequence>
    <attributeGroup ref="gml:OwnershipAttributeGroup" />
    <attributeGroup ref="gml:AssociationAttributeGroup" />
</complexType>