Method ref

src/jinja2/idtracking.py:80–87

(self, name: str)

        return None

    def ref(self, name: str) -> str:
        rv = self.find_ref(name)
        if rv is None:
            raise AssertionError(
                "Tried to resolve a name to a reference that was"
                f" unknown to the frame ({name!r})"
            )
        return rv

    def copy(self) -> "te.Self":
        rv = object.__new__(self.__class__)