async postFileDownload(url, payload) {
    let errorMessage;
    try {
      await apiClient.post(url, payload, { responseType: "blob" }).then(r => {
        const url = window.URL.createObjectURL(new Blob([r.data]));
        const link = document.createElement("a");
        link.href = url;
        const contentDisposition = r.headers["filename"];

        let fileName = "unknown";
        if (contentDisposition) {
          fileName = contentDisposition;
        }
        link.setAttribute("download", fileName);
        document.body.appendChild(link);
        link.click();
      });
    } catch (error) {
      console.log(error);
      errorMessage = error;
    }
  }

        /// <summary>
        /// Скачать xml-файл 
        /// </summary>
        /// <param name="getXmlForCommit"></param>
        /// <returns></returns>
        [HttpPost]
        public async Task<IActionResult> GetXmlForCommitAsync([FromBody]GetXmlForCommitParam getXmlForCommit)
        {
            try
            {
                if (scans.Count()< getXmlForCommit.documentCount)
                {
                    return BadRequest("Error happen");
                }

                var xDoc = new XDocument(
                new XDeclaration("1.0", "UTF-8", null));

                using (var fromXml = new MemoryStream())
                {
                    xDoc.Save(fromXml);
                    Response.Headers.Add("fileName", "Commit.xml");
                    Response.Headers.Add("Access-Control-Expose-Headers", "fileName");
                    return File(fromXml.ToArray(), "application/octet-stream", "Commit.xml");
                }
            }
            catch (Exception ex)
            {
                return BadRequest(ex.message);
            }           
        }

 
} catch (error) {
  console.log(error);
  errorMessage = error;
}