code: def test_learn2learn_training_strategies(training_strategy, tmpdir):
      _test_learn2learning_training_strategies(
          0, training_strategy, tmpdir, accelerator=None
      )
  
imports: import os
  from pathlib import Path
  import pytest
  import torch
  from flash import Trainer
  from flash.core.data.io.input import DataKeys
  from flash.core.utilities.imports import _LEARN2LEARN_AVAILABLE, _TOPIC_IMAGE_AVAILABLE
  from flash.image import ImageClassificationData, ImageClassifier
  from flash.image.classification.adapters import TRAINING_STRATEGIES
  from torch.utils.data import DataLoader
  from tests.image.classification.test_data import _rand_image
label_desc: Use image node_id 4 for calling a global function with example usage: test_learn2learn_training_strategies(training_strategy, tmpdir) without return types