class_docstr: Fake LLM
code: def call(self, instruction: AbstractPrompt, suffix: str = "") -> str:
      self.last_prompt = instruction.to_string() + suffix
      return self._output
  
file_path: pandas-ai/pandasai/llm/fake.py
imports: from typing import Optional
  from ..prompts.base import AbstractPrompt
  from .base import LLM
label_desc: Use image node_id 2 for calling the FakeLLM obj's underlying member method code with example usage: obj.call(instruction, suffix) and returns: self