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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 unlock(self, store=True):
 """Unlocks the achievement. :param bool store: Whether to send data to server immediately (as to get overlay notification). :rtype: bool """

        result = self._iface.ach_unlock(self.name)
        result and store and self._store()
        return result