const doc = core.getDocument();
return doc.getFileData(downloadOptions).then(
          data => {
            const arr = new Uint8Array(data);
            if (isIE) {
              file = new Blob([arr], { type: 'application/pdf' });
            } else {
              file = new File([arr], downloadName, { type: 'application/pdf' });
            }

            saveAs(file, downloadName);
            dispatch(actions.closeElement('loadingModal'));
            fireEvent('finishedSavingPDF');