code: def __init__(self) -> None:
      super().__init__()
      self._client_session = self.create_client_session()
  
imports: from typing import Optional, Union, Any
  import types, time, json
  import httpx
  from .base import BaseLLM
  from litellm.utils import ModelResponse, Choices, Message, CustomStreamWrapper, convert_to_model_response_object, Usage
  from typing import Callable, Optional
  import aiohttp, requests
  import litellm
  from .prompt_templates.factory import prompt_factory, custom_prompt
  from openai import OpenAI, AsyncOpenAI
label_desc: Use image node_id 1 to create a new OpenAITextCompletion object from inherited base classes: BaseLLM with example: obj = OpenAITextCompletion()