I want to drop TreeViewItem into my CustomEditor.
I've implemented a DocumentDropEditProvider that is working well for a "normal" text editor.
But I don't know how to make it work on my CustomTextEditor or its webView.
I couldn't find anything in the documentation.
I've cloned the vscode and run it in debug mode and I don't see any place where a Drag and Drop Listener would have been registered for the CustomTextEditor (besides the one that handles the shift key/editor open).
Is it something that one can do or should I look into using webView instead of treeView to have a better control of Drag and Drop listener ?
