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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 func(self):
 """Return the function most recently associated with this sense."""

        fn = self.engine.query.sense_func_get(
            self.observer.name,
            self.sensename,
            *self.engine._btt()
        )
        if fn is not None:
            return SenseFuncWrap(self.observer, fn)