class_docstr: A stream of RequestOutputs for a request that can be
  iterated over asynchronously.
class_docstr_tok: ["A","stream","of","RequestOutputs","for","a","request","that","can","be","iterated","over","asynchronously","."]
code: def put(self, item: RequestOutput) -> None:
      if self._finished:
          return
      self._queue.put_nowait(item)
  
imports: import asyncio
  import time
  from functools import partial
  from typing import Any, Dict, Iterable, List, Optional, Set, Tuple, Type, Union
  from bigdl.llm.vllm.config import ModelConfig
  from bigdl.llm.vllm.engine.arg_utils import AsyncEngineArgs
  from bigdl.llm.vllm.engine.llm_engine import LLMEngine
  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.utils.common import invalidInputError
label_desc: Use image node_id 2 for calling the AsyncStream obj's underlying member method code with example usage: obj.put(item) without return types