I am making an integration to rest api with python using de chirpstack_api and gRPC, after making some CRUDs i needed some informations is not in the documantation but in the interface this informations is returned, i discovered thjey using a class call InternalService, but i dont now how to use, because, everytime i tried, something was missing, exemple, de Request class, i now how can i call, but i dontknow what class request calling and i notice maybe do not exist, i am using de python exemplos by ref using the framework they offer