depends on D10190
DO NOT MERGE
it has same problem iterator<ptr(uint64)> stable error.
I don't think we need to stabilize this one as the API is exposed via collection view.
hmmm could be.
anyway we have change to make it public after released, so okay I agreed.
still it is necessary to make test case between VM and M without View at the end.
and for the notice,
me and @bu5hm4n agreed to keep multi_selectable and multi_selectable in beta,
while the selectable and single_selectale is stabilized.
are you okay with this?