code: def test_6_describe_table(self):
      described = self.handler.get_columns("dt_test")
      assert isinstance(described, list)
  
file_path: mindsdb/mindsdb/integrations/handlers/opengauss_handler/tests/test_opengauss_handler.py
imports: import unittest
  import pandas
  from mindsdb.integrations.handlers.opengauss_handler.opengauss_handler import OpenGaussHandler
label_desc: Use image node_id 7 for calling the OpenGaussHandlerTest obj's underlying member method code with example usage: obj.test_6_describe_table() without return types