code: def test_7_check_connection(self):
      self.handler.check_connection()
  
file_path: mindsdb/mindsdb/integrations/handlers/d0lt_handler/tests/test_d0lt_handler.py
imports: import unittest
  from mindsdb.integrations.handlers.d0lt_handler.d0lt_handler import D0ltHandler
  from mindsdb.api.executor.data_types.response_type import RESPONSE_TYPE
label_desc: Use image node_id 9 for calling the D0ltHandlerTest obj's underlying member method code with example usage: obj.test_7_check_connection() without return types