return None if no user

        self.user = user

    def read_secret(self, key: str) -> Optional[str]:

        if self.user:

            return self.vault.read_secret(f"user/{self.user.id}/{key}")

        else:

            return None

    def write_secret(self, key: str, value: str) -> None:

        return self.vault.write_secret(f"user/{self.user.id}/{key}", value)