pref("extensions.twickit.boolpref", false);
pref("extensions.twickit.intpref", 0);
pref("extensions.twickit.stringpref", "A string");

// https://developer.mozilla.org/en/Localizing_extension_descriptions
pref("extensions.{e10b9237-f52c-4a1e-b05c-996c1511afcf}.description", "chrome://twickit/locale/overlay.properties");
