code: def config_after_window(self, w, wconf):
          
          if 'options_after' in wconf and isinstance(wconf['options_after'], dict):
              for key, val in wconf['options_after'].items():
                  w.set_window_option(key, val)
docs: Actions to apply to window after window and pane finished.
  
          When building a tmux session, sometimes its easier to postpone things
          like setting options until after things are already structurally
          prepared.
  
          Parameters
          ----------
          w : :class:`libtmux.Window`
              window to create panes for
          wconf : dict
              config section for window