code: def get_completions(self) -> list[str]:
      return [self.response.strip()]
  
file_path: evals/evals/completion_fns/langchain_math.py
imports: import os
  from langchain.chains import LLMMathChain
  from langchain.llms import OpenAI
  from evals.api import CompletionFn, CompletionResult
  from evals.prompt.base import CompletionPrompt
  from evals.record import record_sampling
label_desc: Use image node_id 2 for calling the LangChainCompletionResult obj's underlying member method code with example usage: obj.get_completions() and returns: list