gml:polarCS is an association role to the polar coordinate system used by this CRS.
<gml:polarCS xlink:href="" nilReason="" xmlns:gml="http://www.opengis.net/gml/3.2"> <gml:PolarCS aggregationType="" gml:id="">{1,1}</gml:PolarCS> </gml:polarCS>
<element name="polarCS" type="gml:PolarCSPropertyType"> <annotation> <documentation>gml:polarCS is an association role to the polar coordinate system used by this CRS.</documentation> </annotation> </element>