tell_many method

I'm using adaptive version 0.4.1 and it seems, the method tell_many used in the learner.ipynb example both in the 1d and the 2d case does not exist.

learner2 = adaptive.Learner1D(f, bounds=learner.bounds)
xs = np.linspace(*learner.bounds, len(learner.data))
learner2.tell_many(xs, map(partial(f, wait=False), xs))

Maybe it should just be the tell method?