def METHOD_NAME():
    config = [
        "PermitRootLogin",
        "UsePrivilegeSeparation",
        "Protocol"
        "SubSystem"
        "SubSystem sftp"
    ]
    output = parse_config(config)
    assert isinstance(output, OpenSshConfig)
    assert not output.permit_root_login
    assert output.use_privilege_separation is None
    assert output.protocol is None
    assert output.subsystem_sftp is None