code: def prepare_data(self):
      pass
  
file_path: DeepKE/src/deepke/relation_extraction/few_shot/dataset/dialogue.py
imports: from .base_data_module import BaseDataModule
  from .processor import get_dataset, processors
  from transformers import AutoTokenizer
label_desc: Use image node_id 3 for calling the REDataset obj's underlying member method code with example usage: obj.prepare_data() without return types