code: def execute(self, env):
          
  
          # parse args
          parser = self._get_parser(env)
          parsed_args, cmd_args = parser.parse_known_args(env.args)
  
          # disable colors
          if parsed_args.no_color:
              env.io.set_colored(False)
  
          # run command handler passing any remaining args
          if not parsed_args.func(env, cmd_args):
              raise HelpBanner(parser.format_help())
docs: Executes basic flags and command plugins.
  
              `env`
                  Runtime ``Environment`` instance.
  
              * Raises ``FocusError`` exception when certain conditions apply.