code: def test_2_native_query_show_dbs(self):
      dbs = self.handler.native_query("SHOW DATABASES;")
      assert isinstance(dbs, 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 4 for calling the OpenGaussHandlerTest obj's underlying member method code with example usage: obj.test_2_native_query_show_dbs() without return types