code: def add_cli_drop(main: click.Group) -> click.Group:  # noqa: D202
      
  
      @main.command()
      @click.confirmation_option(prompt='Are you sure you want to drop the db?')
      @click.pass_obj
      def drop(manager):
          """Drop the database."""
          manager.drop_all()
  
      return main
docs: Add a ``drop`` command to main :mod:`click` function.