docs: def do_load(self, line):
          """load [file] Load session variables from file load (without parameters): Load
          session from default file ~/.dataone_cli.conf load.
  
          <file>: Load session from specified file.
  
          """
          config_file = self._split_args(line, 0, 1)[0]
          self._command_processor.get_session().load(config_file)
          if config_file is None:
              config_file = (
                  self._command_processor.get_session().get_default_pickle_file_path()
              )
          self._print_info_if_verbose("Loaded session from file: {}".format(config_file))