code: def _test(self, *data) -> None:
      raise NotImplementedError
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING, Optional, Iterable, Iterator
  from pathlib import Path
  import math
  from tqdm import tqdm
  from torch import Tensor
  from torch import nn
  from torch.utils.data import Dataset, DataLoader
  import torch
  import numpy
label_desc: Use image node_id 5 for calling the Evaluator obj's underlying member method code with example usage: obj._test() without return types