code: def get_encoder_prefix(self):
      if self.value == "xlm-roberta":
          return "roberta"
      else:
          return self.value
  
file_path: jiant/jiant/shared/model_resolution.py
imports: from dataclasses import dataclass
  from enum import Enum
  from jiant.utils.python.datastructures import BiDict
  import transformers
label_desc: Use image node_id 2 for calling the ModelArchitectures obj's underlying member method code with example usage: obj.get_encoder_prefix() and returns: str, self