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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 create_node(self, *args, **kwargs):
 """ Creates a new VPCS VM. :returns: VPCSVM instance """


        node = yield from super().create_node(*args, **kwargs)
        self._free_mac_ids.setdefault(node.project.id, list(range(0, 255)))
        try:
            self._used_mac_ids[node.id] = self._free_mac_ids[node.project.id].pop(0)
        except IndexError:
            raise VPCSError("Cannot create a new VPCS VM (limit of 255 VMs reached on this host)")
        return node