firefox - How to move the contents(bookmarks, seperator, group) of Group to another Group -

For reference:

How to take the contents of another group (bookmarks, separators, groups)

UNSORTED -> Group 1 -> {bookmark1, separator1, bookmark2, groupIn1 -> {bookmarkIn1}, bookmark3}

To do this:

Toolbar -> Group 2 -> here

  let {search, bookmark, group, save, remove, menu, Toolbar, UNSORTED} = ("SDK / Locations / Bookmarks") is required; Search ({Group: UNSORTED}). On ('data', function (g) {console.log (g);});  

g gives each element separately, instead of an array. What to do to create an array first?