import net.schmizz.sshj.xfer.InMemorySourceFile;
import net.schmizz.sshj.xfer.scp.SCPFileTransfer;

// allow any host ID and search for pw in JavaX-Secret
static void scpLS(S user, S host, S remoteDir) ctex {
  final SSHClient client = sshLogin(user, host);
  try {
    ret client.newSFTPClient().ls(remoteDir);
  } finally {
    client.disconnect();
  }
}