code: def _command_and_args(tokens: List[str]) -> Tuple[str, str]:
          
          command = ''
          args = ''
  
          if tokens:
              command = tokens[0]
  
          if len(tokens) > 1:
              args = ' '.join(tokens[1:])
  
          return command, args
docs: Given a list of tokens, return a tuple of the command
          and the args as a string.