private static IGeometry SinglePolygonToLine(IGeometry polygon)
{
IEnumerable <IEnumerable <IPoint> > coordinates = polygon.GetCoordinates();
if (coordinates.Count() > 1)
{
return(MultiLineString.Create(coordinates.Select(a => a.ToArray()).ToArray()));
}
else
{
return(LineString.Create(coordinates.First().ToArray()));
}
}