code: def north_arrow_path(feature, parent):
      
      _ = feature, parent  # NOQA
  
      north_arrow_file = setting(inasafe_north_arrow_path['setting_key'])
      if os.path.exists(north_arrow_file):
          return north_arrow_file
      else:
          LOGGER.info(
              'The custom north arrow is not found in {north_arrow_file}. '
              'Default north arrow will be used.').format(
              north_arrow_file=north_arrow_file)
          return inasafe_default_settings['north_arrow_path']
docs: Retrieve the full path of default north arrow logo.