public static double DistanceTo(this GeoPoint from, GeoPoint to, GeoMath.MeasureUnits units,
     int decimalPoints = 2)
 {
     return from.DistanceTo(to.Latitude, to.Longitude, units, decimalPoints);
 }
 public static double DistanceTo(this GeoPoint from, double latitude, double longitude, GeoMath.MeasureUnits units,
     int decimalPoints = 2)
 {
     return GeoMath.Distance(from, GeoPoint.TryCreate(latitude, longitude), units, decimalPoints);
 }