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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 get(self, key, sort_key):
 """ Get an element in dictionary """

        key = self.prefixed('{}:{}'.format(key, sort_key))
        self.logger.debug('Storage - get {}'.format(key))
        if key not in self.cache.keys():
            return None
        return self.cache[key]