pub fn failingDirRealPath(userdata: ?*anyopaque, dir: Dir, out_buffer: []u8) Dir.RealPathError!usize
pub fn failingDirRealPath(userdata: ?*anyopaque, dir: Dir, out_buffer: []u8) Dir.RealPathError!usize { _ = userdata; _ = dir; _ = out_buffer; return error.FileNotFound; }