class_docstr: Reverses the words of each turn.
  
  Only the text (prompt) is modified, not the labels. Utterances separated by newlines
  will not be shuffled across boundaries. You may wish to combine it with the flatten
  mutator to reverse both labels and texts.
code: def message_mutation(self, message: Message) -> Message:
      texts = message.pop("text").split("\n")
      output_texts = []
      for text in texts:
          words = text.split(" ")
          words = list(reversed(words))
          output_texts.append(" ".join(words))
      message["text"] = "\n".join(output_texts)
      return message
  
file_path: ParlAI/parlai/mutators/word_reverse.py
imports: import random
  from parlai.core.opt import Opt
  from parlai.core.message import Message
  from parlai.core.mutators import register_mutator, MessageMutator
label_desc: Use image node_id 2 for calling the WordReverseMutator obj's underlying member method code with example usage: obj.message_mutation(message) and returns: message