Blob blob = storage.get(blobId);
  if (blob == null) {
    System.out.println("No such object");
    return;
  }

  PrintStream writeTo = System.out;
  if (downloadTo != null) {
    writeTo = new PrintStream(new FileOutputStream(downloadTo.toFile()));
  }
      
  // Blob is small read all its content in one request
  byte[] content = blob.getContent();
  writeTo.write(content);
      
  if (downloadTo == null) {
    writeTo.println();
  } else {
    writeTo.close();
  }