@WorkerThread
    public static boolean uploadPersonalNote(final Geocache cache) {
        final String currentNote = StringUtils.defaultString(cache.getPersonalNote());
        final Parameters params = new Parameters("cacheID", cache.getCacheId());
        params.add("note_text", currentNote);
        try {
            postRequest(SuConnector.getInstance(), SuApiEndpoint.PERSONAL_NOTE, params);
        } catch (final SuApiException e) {
            return false;
        }
        return true;
    }
Returns list of caches located around {@code center}

@param center    coordinates of the central point
@param radius    radius in km
@param connector Geocaching connector
@return list of caches located around {@code center}
main/src/main/java/cgeo/geocaching/connector/su/SuApi.java