def importHelper(self, struct):
        m = StrStrHashMap()
        keysAndValues = struct.get(self.__field)
        for i in range(0, len(keysAndValues), 2):
            m[keysAndValues[i]] = keysAndValues[i+1]
        return m
def deserialize(self, value):
        value = decode(value)
        validators.validate_choice(value.lower(), self.levels.keys())
        return self.levels.get(value.lower())