code: def get_ml_engines(self, company_id: int = None):
      response = self.sql_via_http(
          "SHOW ML_ENGINES",
          company_id=company_id,
          expected_resp_type=RESPONSE_TYPE.TABLE,
      )
      return [x[0].lower() for x in response["data"]]
  
imports: from pathlib import Path
  import json
  import pytest
  from pymongo import MongoClient
  from mindsdb.api.executor.data_types.response_type import RESPONSE_TYPE
  from .conftest import CONFIG_PATH
  from .http_test_helpers import HTTPHelperMixin
label_desc: Use image node_id 4 for calling the TestCompanyIndependent obj's underlying member method code with example usage: obj.get_ml_engines(company_id) and returns: unknown