code: def auto_register_inlines(admin_site, metadata_class):
      
      inline_class = get_inline(metadata_class)
  
      for model, admin_class_instance in admin_site._registry.items():
          _monkey_inline(model, admin_class_instance, metadata_class, inline_class, admin_site)
  
      # Monkey patch the register method to automatically add an inline for this site.
      # _with_inline() is a decorator that wraps the register function with the same injection code
      # used above (_monkey_inline).
      admin_site.register = _with_inline(admin_site.register, admin_site, metadata_class, inline_class)
docs: This is a questionable function that automatically adds our metadata
          inline to all relevant models in the site.