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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def superuser_api_key_required(f):
 """Decorator ensures only superuser API keys can request this function."""

    @functools.wraps(f)
    def wrapped(*args, **kwargs):
        api_key = current_api_key()
        g.api_key = api_key

        utils.jsonify_assert(
            api_key.superuser,
            'API key=%r must be a super user' % api_key.id,
            403)

        return f(*args, **kwargs)

    return wrapped