code: def __call__(
      self,
      prompt: Union[OpenAICreatePrompt, OpenAICreateChatPrompt, Prompt],
      **kwargs,
  ) -> CompletionResult:
      return TestCompletionResult(self.completion)
  
file_path: evals/evals/utils/test.py
imports: from typing import Union
  from evals.api import CompletionFn, CompletionResult
  from evals.prompt.base import OpenAICreateChatPrompt, OpenAICreatePrompt, Prompt
label_desc: Use image node_id 2 for calling the TestCompletionFn obj's underlying member method code with example usage: obj.__call__(prompt) and returns: TestCompletionResult