code: def random_uuid() -> str:
      return str(uuid.uuid4().hex)
  
imports: import argparse
  import asyncio
  import json
  import time
  from http import HTTPStatus
  from typing import AsyncGenerator, Dict, List, Optional, Tuple, Union
  import fastapi
  import uvicorn
  from fastapi import Request
  from fastapi.exceptions import RequestValidationError
  from fastapi.middleware.cors import CORSMiddleware
  from fastapi.responses import JSONResponse, StreamingResponse
  from packaging import version
  import numpy
  from bigdl.llm.vllm.engine.arg_utils import AsyncEngineArgs
  from bigdl.llm.vllm.engine.async_llm_engine import AsyncLLMEngine
  from bigdl.llm.vllm.entrypoints.openai.protocol import CompletionResponse, CompletionResponseChoice, CompletionResponseStreamChoice, CompletionStreamResponse, ChatCompletionResponse, ChatCompletionResponseChoice, ChatMessage, DeltaMessage, ErrorResponse, LogProbs, ModelCard, ModelPermission, UsageInfo
  from bigdl.llm.vllm.entrypoints.openai.openai_protocol import CompletionRequest, ChatCompletionRequest, ChatCompletionResponseStreamChoice, ChatCompletionStreamResponse, ModelList
  from bigdl.llm.vllm.logger import init_logger
  from bigdl.llm.vllm.outputs import RequestOutput
  from bigdl.llm.vllm.sampling_params import SamplingParams
  from bigdl.llm.vllm.transformers_utils.tokenizer import get_tokenizer
  import uuid
  from bigdl.llm.utils.common import invalidInputError
label_desc: Use image node_id 1 for calling a global function with example usage: random_uuid() and returns: str