Method add_vary_header

starlette/datastructures.py:657–661

(self, vary: str)

        self._list.append((append_key, append_value))

    def add_vary_header(self, vary: str) -> None:
        existing = self.get("vary")
        if existing is not None:
            vary = ", ".join([existing, vary])
        self["vary"] = vary


class State: