class_docstr: Wrapper around the BigDL-LLM
  
  Example:
      .. code-block:: python
  
          from langchain.llms import BigdlNativeLLM
          llm = BigdlNativeLLM(model_path="/path/to/llama/model")
docstr: Return type of llm.
docstr_tok: ["Return","type","of","llm","."]
code: def _llm_type(self) -> str:
      """Return type of llm."""
      return "BigDL"
  
imports: import logging
  import importlib
  from typing import Any, Dict, Generator, List, Optional
  from pydantic import Field, root_validator
  from langchain.callbacks.manager import CallbackManagerForLLMRun
  from langchain.llms.base import LLM
  from .transformersllm import TransformersLLM
label_desc: Use image node_id 4 for calling the BigdlNativeLLM obj's underlying member method code with example usage: obj._llm_type() and returns: str