pub fn failingDirAccess(userdata: ?*anyopaque, dir: Dir, sub_path: []const u8, options: Dir.AccessOptions) Dir.AccessError!void
pub fn failingDirAccess(userdata: ?*anyopaque, dir: Dir, sub_path: []const u8, options: Dir.AccessOptions) Dir.AccessError!void { _ = userdata; _ = dir; _ = sub_path; _ = options; return error.FileNotFound; }