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