def METHOD_NAME(self):
    for root, dirs, files in os.walk(
            "/etc/NetworkManager/system-connections"):
        for net_conf in files:
            self.do_file_sub(
                "/etc/NetworkManager/system-connections/"+net_conf,
                r"(password|psk|mka-cak|password-raw|pin|preshared-key"
                r"|private-key|secrets|wep-key[0-9])=(.*)",
                r"\1=***",
            )