code: def __init__(self, features: Tensor, targets) -> None:
      super().__init__()
      self.features = features
      self.targets = targets
  
imports: from typing import Tuple
  import pytest
  import torch
  from pytest_mock import MockerFixture
  from pytorch_lightning import Trainer
  from torch import Tensor, nn
  from torch.utils.data import DataLoader, Dataset
  from lightly.utils.benchmarking import KNNClassifier
  from lightly.utils.benchmarking.knn_classifier import F
label_desc: Use image node_id 1 to create a new _FeaturesDataset object from inherited base classes: Dataset with example: obj = _FeaturesDataset(features, targets)