docs: public static double sphericalDistance(LatLong latLong1, LatLong latLong2) {
          double dLat = Math.toRadians(latLong2.latitude - latLong1.latitude);
          double dLon = Math.toRadians(latLong2.longitude - latLong1.longitude);
          double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + Math.cos(Math.toRadians(latLong1.latitude))
                  * Math.cos(Math.toRadians(latLong2.latitude)) * Math.sin(dLon / 2) * Math.sin(dLon / 2);
          double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
          return c * LatLongUtils.EQUATORIAL_RADIUS;
      }