h = sftp.openDir("target/sftp/client");
SftpClient.DirEntry[] dir = sftp.readDir(h);
assertNotNull(dir);
assertEquals(1, dir.length);
assertNull(sftp.readDir(h));
sftp.close(h);
sftp.remove("target/sftp/client/test.txt");
OutputStream os = sftp.write("target/sftp/client/test.txt");