code: public static LatLong fromString(String latLongString) {
          double[] coordinates = parseCoordinateString(latLongString, 2);
          return new LatLong(coordinates[0], coordinates[1]);
      }
docs: Creates a new LatLong from a comma-separated string of coordinates in the order latitude, longitude. All
  coordinate values must be in degrees.
  
  @param latLongString the string that describes the LatLong.
  @return a new LatLong with the given coordinates.
  @throws IllegalArgumentException if the string cannot be parsed or describes an invalid LatLong.