docs: def is_active_feature(feature, redirect_to=None, redirect=None):
    """
    Decorator for Flask views. If a feature is off, it can either return a 404 or redirect to a URL if you'd rather.
    """
    def _is_active_feature(func):
      @wraps(func)
      def wrapped(*args, **kwargs):
  
        if not is_active(feature):
          url = redirect_to
          if redirect:
            url = url_for(redirect)
  
          if url:
            log.debug(u'Feature {feature} is off, redirecting to {url}'.format(feature=feature, url=url))
            return _redirect(url, code=302)
          else:
            log.debug(u'Feature {feature} is off, aborting request'.format(feature=feature))
            abort(404)
  
        return func(*args, **kwargs)
      return wrapped
    return _is_active_feature