code: def test_transformer_convert_llama_q8(self):
      model = AutoModelForCausalLM.from_pretrained(
          llama_model_path, load_in_low_bit="sym_int8"
      )
  
file_path: BigDL/python/llm/test/convert/test_convert_model.py
imports: import pytest
  import os
  import tempfile
  from unittest import TestCase
  import shutil
  from bigdl.llm import llm_convert
  from bigdl.llm.transformers import AutoModelForCausalLM
  from bigdl.llm.optimize import optimize_model, load_low_bit, low_memory_init
label_desc: Use image node_id 7 for calling the TestConvertModel obj's underlying member method code with example usage: obj.test_transformer_convert_llama_q8() without return types