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/supabase_handler/tests/test_supabase_handler.py
imports: import unittest
  from mindsdb.integrations.handlers.supabase_handler.supabase_handler import SupabaseHandler
label_desc: Use image node_id 4 for calling the SupabaseHandlerTest obj's underlying member method code with example usage: obj.test_2_native_query_show_dbs() without return types