class SRTMGL1Provider extends AbstractSRTMElevationProvider {

    String getFileName(double lat, double lon) {
        int lonInt = getMinLonForTile(lon);
        int latInt = getMinLatForTile(lat);
        return toLowerCase(getNorthString(latInt) + getLatString(latInt) + getEastString(lonInt) + getLonString(lonInt));
    }

    public  SRTMGL1Provider();
    public  SRTMGL1Provider(String cacheDir);

}