docs: public static double distanceBetween(double latitude1, double longitude1, double latitude2, double longitude2) {
          double dLat = toRadians(latitude2 - latitude1);
          double dLon = toRadians(longitude2 - longitude1);
          latitude1 = toRadians(latitude1);
          latitude2 = toRadians(latitude2);
  
          double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + Math.sin(dLon / 2) * Math.sin(dLon / 2) * Math.cos(latitude1) * Math.cos(latitude2);
          double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
          return EARTH_RADIUS * c;
      }