def METHOD_NAME(self, user: User = None, **kwargs: Any):
    """Set preferences from keyword arguments."""
    if user is None:
        user = current_user
    d = {pref.key: pref for pref in user.preferences}
    for k, v in kwargs.items():
        if k in d:
            d[k].value = v
        else:
            d[k] = UserPreference(user=user, key=k, value=v)
            db.session.add(d[k])