docs: def setup_system_repository(self, repository_type, reset_on_start,
                                  repository_class=None):
          """
          Sets up the system repository with the given repository type.
  
          :param str repository_type: Repository type to use for the SYSTEM
            repository.
          :param bool reset_on_start: Flag to indicate whether stored system
            resources should be discarded on startup.
          :param repository_class: class to use for the system repository. If
            not given, the registered class for the given type will be used.
          """
          # Set up the system entity repository (this does not join the
          # transaction and is in autocommit mode).
          cnf = dict(messaging_enable=True,
                     messaging_reset_on_start=reset_on_start)
          system_repo = self.new(repository_type,
                                 name=REPOSITORY_DOMAINS.SYSTEM,
                                 repository_class=repository_class,
                                 configuration=cnf)
          self.set(system_repo)