def METHOD_NAME(self):
    super().METHOD_NAME()
    # Create additional config files
    # - tmpdir/node0/relative.conf
    with open(
        os.path.join(self.options.tmpdir, "node0", "relative.conf"),
        "w",
        encoding="utf8",
    ) as f:
        f.write("uacomment=relative\n")
    # - tmpdir/node0/relative2.conf
    with open(
        os.path.join(self.options.tmpdir, "node0", "relative2.conf"),
        "w",
        encoding="utf8",
    ) as f:
        f.write("uacomment=relative2\n")
    with open(
        os.path.join(self.options.tmpdir, "node0", "defi.conf"),
        "a",
        encoding="utf8",
    ) as f:
        f.write("uacomment=main\nincludeconf=relative.conf\n")