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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 version(self, bundle: str, date: dt.datetime) -> models.Version: """Fetch a version from the store."""

        return (self.Version.query
                            .join(models.Version.bundle)
                            .filter(models.Bundle.name == bundle,
                                    models.Version.created_at == date)
                            .first())