code: function updateDownloadLink( anchor, objectUrl, fileName ) {
      if ( window.updateDownloadLinkIe11 ) {
          return window.updateDownloadLinkIe11( ...arguments );
      }
      anchor.setAttribute( 'href', objectUrl || '' );
      anchor.setAttribute( 'download', fileName || '' );
  }
docs: Update a HTML anchor to serve as a download or reset it if an empty objectUrl is provided.
  
  @param {HTMLElement} anchor the anchor element
  @param {*} objectUrl the objectUrl to download
  @param {*} fileName  the filename of the file