Create code to download .pdf files to be stored on the cloud

// Download a pdf file
db.getAttachment("tutorial", "tutorial.pdf").then(function(blob) {
  var url = URL.createObjectURL(blob);
  var a = document.createElement("a");
  a.style = "display: none";
  a.href = url;
  a.download = "tutorial.pdf";
  document.body.appendChild(a);
  a.click();
  setTimeout(function() {
    document.body.removeChild(a);
    window.URL.revokeObjectURL(url);
  }, 100);
}).catch(function(error) {
  console.log(error);
});