docs: def setup(
              cls,
              app_version: str,
              app_name: str,
              config_file_path: str,
              config_sep_str: str,
              root_path: typing.Optional[typing.List[str]] = None,
      ):
          """
          Configures elib_config in one fell swoop
  
          :param app_version: version of the application
          :param app_name:name of the application
          :param config_file_path: path to the config file to use
          :param config_sep_str: separator for config values paths
          :param root_path: list of strings that will be pre-pended to *all* config values paths (useful to setup a
          prefix for the whole app)
          """
          cls.app_version = app_version
          cls.app_name = app_name
          cls.config_file_path = config_file_path
          cls.config_sep_str = config_sep_str
          cls.root_path = root_path