code: def get_predictor_label_candidates(
      self, observation: Message, context: str
  ) -> List[str]:
      return self.predictor.class_list
  
file_path: ParlAI/parlai/agents/reranker/classifier_reranker.py
imports: from typing import Optional, List
  from parlai.core.agents import create_agent_from_model_file
  from parlai.core.message import Message
  from parlai.core.opt import Opt
  from parlai.core.params import ParlaiParser
  from parlai.agents.reranker.reranker import AbstractReranker, AbstractGeneratorRerankAgent
label_desc: Use image node_id 7 for calling the ClassifierReranker obj's underlying member method code with example usage: obj.get_predictor_label_candidates(observation, context) and returns: self