def METHOD_NAME(self, triton_client):
    if not triton_client.is_server_live():
        return f"Triton server {self._server_url} is not live"
    elif not triton_client.is_server_ready():
        return f"Triton server {self._server_url} is not ready"
    elif not triton_client.is_model_ready(self._model_name,
                                          self._model_version):
        return f"Model {self._model_name}:{self._model_version} is not ready"
    return None