@Override
    public String toString() {
        return toString(null);
    }
A convenience method to update GPS values in EXIF metadata.

@param longitude Longitude in degrees E, negative values are W.
@param latitude  latitude in degrees N, negative values are S.
@throws ImagingException if it fails to write the new data to the GPS directory
src/main/java/org/apache/commons/imaging/formats/tiff/write/TiffOutputSet.java