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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 load(self, id=None):
 """Load from database. Old values will be discarded."""

        if id is not None:
            # We are asked to change our ID to something else
            self.reset()
            self._setID(id)
        if not self._new and self._validID():
            self._loadDB()
        self._updated = time.time()