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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 __set_cache(self, tokens):
 """ Sets the tokens cache. :param tokens: Completer tokens list. :type tokens: tuple or list """


        if DefaultCompleter._DefaultCompleter__tokens.get(self.__language):
            return

        DefaultCompleter._DefaultCompleter__tokens[self.__language] = tokens