Clearing the clipboard

I’ve been searching for answer on forum and documentation but did not had success. Therefor I’m here to ask for the answer. I need to limit clipboard pasting on one action only. After user paste something he cut, clipboard needs to be cleared. How I can access clipboard programmatically and clear it after paste is finished?

In Diagram initialization:

    "ClipboardPasted": function(e) { e.diagram.commandHandler.copyToClipboard(null); }