private Set<String> loadSSIDStringSetWithKey(String key) {
    log.v("loadSSIDStringSetWithKey(" + key + ")");

    Set<String> ssids = set();
    ssids = prefs.getStringSet(key, ssids);
    log.v("Loaded saved SSIDS: " + ssids);

    Set<String> diffQuotes = set();
    for (String ssid : ssids) {
      diffQuotes.add(WiFi.enQuotifySsid(ssid));
      diffQuotes.add(WiFi.deQuotifySsid(ssid));
    }
    ssids.addAll(diffQuotes);

    log.v("Returning SSIDS: " + ssids);
    return ssids;
  }