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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def stop(name, kill=False):
    '''
    This is a compatibility function which provides the logic for
    nspawn.poweroff and nspawn.terminate.
    '''
    if _sd_version() >= 219:
        if kill:
            action = 'terminate'
        else:
            action = 'poweroff'
        ret = _machinectl('{0} {1}'.format(action, name))
    else:
        cmd = 'systemctl stop systemd-nspawn@{0}'.format(name)
        ret = __salt__['cmd.run_all'](cmd, python_shell=False)

    if ret['retcode'] != 0:
        __context__['retcode'] = salt.defaults.exitcodes.EX_UNAVAILABLE
        return False
    return True