toString method
Calculate the spherical distance from this LatLong to another.
Use vincentyDistance for more accuracy but less performance.
@param other The LatLong to calculate the distance to @return the distance in meters as a double
Implementation
// double sphericalDistance(LatLong other) {
// return LatLongUtils.sphericalDistance(this, other);
// }
@override
String toString() {
return 'LatLong{latitude: $latitude, longitude: $longitude}';
}