class_docstr: Unit tests for the base LLM class
code: def test_type(self):
      with pytest.raises(APIKeyNotFoundError):
          LLM().type
  
file_path: pandas-ai/tests/llms/test_base_llm.py
imports: import pytest
  from pandasai.exceptions import APIKeyNotFoundError
  from pandasai.llm import LLM
label_desc: Use image node_id 1 for calling the TestBaseLLM obj's underlying member method code with example usage: obj.test_type() without return types