Mass open/close branch in Project

[Yamaeda]

In many programs you can open/close all children (neighbours?) of a Tree node by holding control. It'd be nice it that worked in LV as well. (atleast it doesn't in 2019)

I mean 1 level down, not _all_ if there's several.

Ctrl+click the '+' and it should open all the neighbour classes, if it's open all should be closed.