code: def test_1_check_connection(self):
      assert self.handler.check_connection()
  
file_path: mindsdb/mindsdb/integrations/handlers/tidb_handler/tests/test_tidb_handler.py
imports: import unittest
  import pandas
  from mindsdb.integrations.handlers.tidb_handler.tidb_handler import TiDBHandler
label_desc: Use image node_id 3 for calling the TiDBHandlerTest obj's underlying member method code with example usage: obj.test_1_check_connection() without return types