can not find a way to display Empty Folder.

[ANANDKNIT]

I want to render Empty Folders in this tree.

Instead of folder icon I am getting file icon

[GuyPaddock]

Just submitted a PR for this issue; ran into it myself.

As a workaround, I think it's possible to ensure that "empty" nodes have at least one child that just has a label of "Empty folder" with showCheckbox set to false.