def exportValue(self, vf, value):
        m = StrStrHashMap(value)
        keysAndValues = []
        for i in m.keys():
            keysAndValues.append(i)
            keysAndValues.append(m[i])
def encode(self):
        if self.version == 6:
            return {'ip6': self.ip_addr}
        else:
            return {'ip4': self.ip_addr}