public void WritePrefs()
 {
     PlayerPrefsHelper.Write(SettingsConst.VOLUME_MASTER_KEY, master.value);
     PlayerPrefsHelper.Write(SettingsConst.VOLUME_MUSIC_KEY, music.value);
     PlayerPrefsHelper.Write(SettingsConst.VOLUME_SOUNDS_KEY, sounds.value);
     PlayerPrefsHelper.Write(SettingsConst.VOLUME_VOICE_KEY, voice.value);
 }
    // Write functions assume a slider is present and write its value to PlayerPrefs.
    // (without a slider to configure the setting, there would be no reason to call these)

    public void WritePrefs()
    {
        PlayerPrefsHelper.Write(SettingsConst.BRIGHTNESS_KEY, brightness.value);
    }
 public void WritePrefs()
 {
     PlayerPrefsHelper.Write(key, value);
 }