code: def training_configs_learning_rate(self, tmpdir, request):
      request.param.output_dir = tmpdir.mkdir("dummy_folder")
      return request.param
  
imports: import os
  from copy import deepcopy
  import pytest
  import torch
  from pythae.models import RAE_L2, RAE_L2_Config
  from pythae.trainers import CoupledOptimizerTrainer, CoupledOptimizerTrainerConfig
  from tests.data.custom_architectures import *
label_desc: Use image node_id 3 for calling the Test_Build_Scheduler obj's underlying member method code with example usage: obj.training_configs_learning_rate(tmpdir, request) and returns: request