new_contents: """Test the validation for the core configuration schema."""
  
  import os
  import json
  import pytest
  
  
  ROOT_DIR = 'example_app/examples/config'
  
  
  def get_example_configs():
      return [
          f for f in os.listdir(ROOT_DIR)
          if f.endswith('.json')
      ]
  
  
  @pytest.mark.schema
  @pytest.mark.examples
  @pytest.mark.parametrize('conf', get_example_configs())
  def test_example_configs_from_example_folder_load_as_valid_json(conf):
      data = open('{}/{}'.format(ROOT_DIR, conf)).read()
      assert json.loads(data)
  
subject: Add missing config.... part of #123.