docs: function getClipboardContent(clipboardEvent) {
          var content = getDataTransferItems(clipboardEvent.clipboardData || editor.getDoc().dataTransfer);
  
          // Edge 15 has a broken HTML Clipboard API see https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/11877517/
          return Utils.isMsEdge() ? Tools.extend(content, { 'text/html': '' }) : content;
        }