docs: private static void copyToRemote(Path src, URI dst) throws IOException {
      ResourceId dstId = FileSystems.matchNewResource(dst.toString(), false);
      WritableByteChannel dstCh = FileSystems.create(dstId, MimeTypes.BINARY);
      FileChannel srcCh = FileChannel.open(src, StandardOpenOption.READ);
      long srcSize = srcCh.size();
      long copied = 0;
      do {
        copied += srcCh.transferTo(copied, srcSize - copied, dstCh);
      } while (copied < srcSize);
      dstCh.close();
      srcCh.close();
      Preconditions.checkState(copied == srcSize);
    }