<complexType name="TopoVolumeType">
<annotation>
<documentation>The TopoVolume type and element represent a homogeneous topological expression, a set of directed TopoSolids, which if realised are isomorphic to a geometric solid primitive. The intended use of TopoVolume is to appear within a 3D solid feature instance to express the structural and geometric relationships of this solid to other features via the shared TopoSolid definitions. . Note the orientation assigned to the directedSolid has no meaning in three dimensions. It is preserved for symmetry with the preceding types and elements.</documentation>
</annotation>
<complexContent>
<extension base="gml:AbstractTopologyType">
<sequence>
<element ref="gml:directedTopoSolid" maxOccurs="unbounded" />
</sequence>
</extension>
</complexContent>
</complexType>
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