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
async def get_user_language(self, obj):
        """
        You need to override this method and return user language
        """
        raise NotImplementedError