Copyright (C) 2014, 2015, 2017, 2018, 2020, 2021 Dennis Lambe Jr.
Portions Copyright (C) 2017 Eli Bendersky

PFSTest is provided under:

    SPDX-License-Identifier: LGPL-2.1-or-later

Being under the terms of the GNU Lesser General Public License v2.1 or
later, according with:

    lgpl-2.1.txt