@classmethod
def delete_port_forwarding(cls, pf, client=None):
    """Delete port forwarding

        :param client: Client to be used
        If client is not given it will use the client used to create
        the port forwarding, or cls.client if unknown.
        """
    client = client or pf.get('client') or cls.client
    client.delete_port_forwarding(pf['floatingip_id'], pf['id'])
