[Bug] getComponents method doesn't return tree of components

I'm trying to implement multiple pages as per discussion in that issue - https://github.com/artf/grapesjs/issues/1331 But when I trying to get components tree by using 'editor.getComponents()' it returns data with wrong format(model collection I guess). When I try to set components using the editor.SetComponents method nothing happens (in my project, but on JSFiddle I get an error in the console).

I want to get the components of the editor in the same format in which the StorageManager sends them in the gjs-components parameter to the server when saving. Could somebody tell me what am I doing wrong?

JSFiddle issue reproduction demo - https://jsfiddle.net/0epyuqk3/