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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 loaded(self, oself, dbval):
 """ This method is invoked when the item is loaded from the database, and when a transaction is reverted which restores this attribute's value. @param oself: an instance of an item which has this attribute. @param dbval: the underlying database value which was retrieved. """

        setattr(oself, self.dbunderlying, dbval)
        delattr(oself, self.underlying)