def METHOD_NAME():
    time.sleep(0.2)
    output = subprocess.check_output(['ps', 'ax'])
    pids = set()
    for m in re.findall(
        fr'.*unit: "{client.app_name}" application', output.decode()
    ):
        pids.add(re.search(r'^\s*(\d+)', m).group(1))
    return pids