selected_sample_index _observable

Either this needs updating:
renoise.song().selected_sample_index, _observable
-> [number]

Or this needs to be made possible:
if not renoise.song().selected_sample_index_observable:has_notifier(set_notifiers) then

*** main.lua:54: unknown property or function ‘selected_sample_index_observable’ for an object of type ‘Song’

Use renoise.song().selected_sample_observable instead. Docs bundled with Renoise 3 are already updated.

I did eventually, however i was really only curious to the change of the index (if somebody is simply selecting another sample), but i suspect that with multiple simultaneous triggers, this is pretty hard to accomplish in the new situation.
Would it be an idea to overwrite the docs in the new renoise 3.0 preferences folder with the new ones after copying the existing (old) ones from 2.x to the new 3.0 folders?