code: def test_2_get_columns(self):
      assert (
          self.handler.get_columns("Employees").resp_type
          is not RESPONSE_TYPE.ERROR
      )
  
file_path: mindsdb/mindsdb/integrations/handlers/teradata_handler/tests/test_teradata_handler.py
imports: import os
  import unittest
  from mindsdb.integrations.handlers.teradata_handler.teradata_handler import TeradataHandler
  from mindsdb.api.executor.data_types.response_type import RESPONSE_TYPE
label_desc: Use image node_id 4 for calling the TeradataHandlerTest obj's underlying member method code with example usage: obj.test_2_get_columns() without return types