{ ffLib }: {
  meta.description = ''
    Firefox Shield Studies are meant to allow Mozilla to perform A/B testing
    on Firefox users.
    Studies have been used in the past to introduce surprising behaviour [1],
    and we may want to prevent that from happening to our users.

    [1]: https://blog.mozilla.org/firefox/update-looking-glass-add/
    https://mozilla.github.io/normandy/user/end_user_interaction.html#opt-out-preference
  '';

  policies = {
    DisableFirefoxStudies = true;
  };

  preferences = {
    app.shield.optoutstudies.enabled = false;
  };
}