An indirect hack to Collapsing all folders

[Penguin98kStudio]

So I discovered this purely through accident but apparently editing project settings (folder lists) collapses all folders :)
So utilizing that I create a mini plugin which writes empty braces in the folder sections and keybind that plugin to a shortcut say alt+c, this will essentially collapse al folders, the next time i press alt+c, my mini plugins goes and removes the empty braces I put, this is again registered as a change in project settings so the folders collapse again xD

Edit: this only works on Saved Projects