code: def test_servable_module_validator_with_trainer(tmpdir):
      callback = ServableModuleValidator()
      trainer = Trainer(
          default_root_dir=tmpdir,
          max_epochs=1,
          limit_train_batches=2,
          limit_val_batches=0,
          callbacks=[callback],
          strategy="ddp_spawn",
          devices=2,
      )
      trainer.fit(ServableBoringModel())
  
file_path: pytorch-lightning/tests/tests_pytorch/serve/test_servable_module_validator.py
imports: from typing import Dict
  import pytest
  import torch
  from lightning.pytorch import Trainer
  from lightning.pytorch.demos.boring_classes import BoringModel
  from lightning.pytorch.serve.servable_module_validator import ServableModule, ServableModuleValidator
  from torch import Tensor
label_desc: Use image node_id 2 for calling a global function with example usage: test_servable_module_validator_with_trainer(tmpdir) without return types