code: def parse_input(self, text):
          
  
          parts = util.split(text)
          command = parts[0] if text and parts else None
          command = command.lower() if command else None
          args = parts[1:] if len(parts) > 1 else []
  
          return (command, args)
docs: Parse ctl user input. Double quotes are used
          to group together multi words arguments.