def instances_set(self, root, reservation):
        """Parse instance data out of an XML payload.

        @param root: The root node of the XML payload.
        @param reservation: The L{Reservation} associated with the instances
            from the response.
        @return: A C{list} of L{Instance}s.
        """
        instances = []
        for instance_data in root.find("instancesSet"):
            instances.append(self.instance(instance_data, reservation))
        return instances
Parse instance data out of an XML payload.

        @param root: The root node of the XML payload.
        @param reservation: The L{Reservation} associated with the instances
            from the response.
        @return: A C{list} of L{Instance}s.