code: def test_raises_wrong_activation(self):
      with pytest.raises(ValidationError):
          conf = PlanarFlowConfig(input_dim=(1,), activation="relu")
  
imports: import os
  from copy import deepcopy
  import numpy
  import pytest
  import torch
  from pydantic import ValidationError
  from pythae.data.datasets import BaseDataset
  from pythae.models import AutoModel
  from pythae.models.base.base_utils import ModelOutput
  from pythae.models.normalizing_flows import NFModel, PlanarFlow, PlanarFlowConfig
  from pythae.pipelines import TrainingPipeline
  from pythae.trainers import BaseTrainer, BaseTrainerConfig
label_desc: Use image node_id 3 for calling the Test_Model_Building obj's underlying member method code with example usage: obj.test_raises_wrong_activation() without return types