code: def _load_yaml_config(path=None):
      
      countour_yaml_path = path or find_contour_yaml()
  
      if countour_yaml_path is None:
          logging.debug("countour.yaml not found.")
          return None
  
      with open(countour_yaml_path) as yaml_file:
          return yaml_file.read()
docs: Open and return the yaml contents.