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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 asdict(self):
 """Retrieve all attributes as a dictionary."""

        if self.cache and self._cached_asdict is not None:
            return self._cached_asdict
        d = self._get_nosync()
        if self.cache:
            self._cached_asdict = d
        return d