RailCL RailCL urn:ogc:def:crs:EPSG::6668 loc LineString fid fid String lfSpanFr lfSpanFr|timePosition String lfSpanTo lfSpanTo|timePosition String devDate devDate|timePosition String orgGILvl orgGILvl String orgMDId orgMDId String vis vis String type type String name name String