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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 log_errors(self):
 """ Log errors for all stored EventualResults that have error results. """

        for result in self._stored.values():
            failure = result.original_failure()
            if failure is not None:
                log.err(failure, "Unhandled error in stashed EventualResult:")