code: def _iterate_managers(connection, skip):
      
      for idx, name, manager_cls in _iterate_manage_classes(skip):
          if name in skip:
              continue
  
          try:
              manager = manager_cls(connection=connection)
          except TypeError as e:
              click.secho(f'Could not instantiate {name}: {e}', fg='red')
          else:
              yield idx, name, manager
docs: Iterate over instantiated managers.