def METHOD_NAME(subvol: Optional[Subvol] = None):
    ret = [
        "(Dir)",
        {
            "flavor": [render_flavor("antlir_test")],
            "private": [
                "(Dir)",
                {
                    "opts": [
                        "(Dir)",
                        {"artifacts_may_require_repo": ["(File d2)"]},
                    ]
                },
            ],
        },
    ]
    if subvol and os.path.isdir(subvol.path("/.meta/build")):
        # pyre-fixme[16]: Undefined attribute `__setitem__`
        ret[1]["build"] = render_meta_build_contents(subvol)
    return ret