pub fn failingDirReadLink(userdata: ?*anyopaque, dir: Dir, sub_path: []const u8, buffer: []u8) Dir.ReadLinkError!usize
pub fn failingDirReadLink(userdata: ?*anyopaque, dir: Dir, sub_path: []const u8, buffer: []u8) Dir.ReadLinkError!usize { _ = userdata; _ = dir; _ = sub_path; _ = buffer; return error.FileNotFound; }