class_docstr: Base class to implement a new Google LLM
  
  LLM base class is extended to be used with
code: def _valid_params(self):
      return ["temperature", "top_p", "top_k", "max_output_tokens"]
  
imports: import os
  import ast
  import re
  from abc import abstractmethod
  from typing import Any, Dict, Optional, Union, Mapping, Tuple
  import requests
  from ..exceptions import APIKeyNotFoundError, MethodNotImplementedError, NoCodeFoundError, LLMResponseHTTPError
  from ..helpers.openai import is_openai_v1
  from ..helpers.openai_info import openai_callback_var
  from ..prompts.base import AbstractPrompt
label_desc: Use image node_id 1 for calling the BaseGoogle obj's underlying member method code with example usage: obj._valid_params() and returns: list