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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 buffered(self):
 """ Whether write operations should be buffered, i.e. run against a local graph before being stored to the main data store. """

        if 'buffered' not in self.config:
            return not isinstance(self.store, (Memory, IOMemory))
        return self.config.get('buffered')