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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 createSessionForKey(self, key, user):
 """ Create a persistent session in the database. @type key: L{bytes} @param key: The persistent session identifier. @type user: L{bytes} @param user: The username the session will belong to. """

        PersistentSession(
            store=self.store,
            sessionKey=key,
            authenticatedAs=user)