code: def __init__(self):
      self.handlers = {
          PG_HANDLER_NAME: PGHandler(
              PG_HANDLER_NAME, **{"connection_data": PG_CONNECTION_DATA}
          )
      }
  
imports: from mindsdb.integrations.handlers.postgres_handler import Handler
label_desc: Use image node_id 1 to create a new HandlerControllerMock object  with example: obj = HandlerControllerMock()