This one surprised all of us on the Citus dev team, when we were reviewing what we were open sourcing. This "feature" was never intended to be Enterprise only and not having it in the open source repo was simply an honest mistake. If some open source user had asked for it I'm certain we would have also added it to the open source version. But so far no-one asked.

At least this mistake is resolved now, and no new ones like it should occur, since we will only commit to the open source repo now.