code: def __init__(self, response: str) -> None:
      self.response = response
  
file_path: evals/evals/completion_fns/retrieval.py
imports: import os
  from ast import literal_eval
  from typing import Any, Optional, Union
  import numpy
  import pandas
  from openai import OpenAI
  from evals.api import CompletionFn, CompletionResult
  from evals.prompt.base import ChatCompletionPrompt, CompletionPrompt
  from evals.record import record_sampling
  from evals.registry import Registry
label_desc: Use image node_id 1 to create a new RetrievalCompletionResult object from inherited base classes: CompletionResult with example: obj = RetrievalCompletionResult(response)