code: def test_init_with_default_model(self):
      project_id = "your_project_id"
      location = "northamerica-northeast1"
      vertexai_instance = GoogleVertexAI(project_id, location)
  
      assert vertexai_instance.model == "text-bison@001"
      assert vertexai_instance.project_id == project_id
      assert vertexai_instance.location == location
  
file_path: pandas-ai/tests/llms/test_google_vertexai.py
imports: import pytest
  from pandasai.llm import GoogleVertexAI
  from pandasai.exceptions import UnsupportedModelError
label_desc: Use image node_id 1 for calling the TestGoogleVertexAI obj's underlying member method code with example usage: obj.test_init_with_default_model() without return types