Method setdefault

test/mitmproxy/proxy/tutils.py:388–395

(self, value: T)

        return self._obj

    def setdefault(self, value: T) -> T:
        if self._obj is None:
            if self._cls is not Any and not isinstance(value, self._cls):
                raise TypeError(
                    f"expected {self._cls.__name__}, got {type(value).__name__}."
                )
            self._obj = value
        return self._obj

    def __repr__(self):
        return f"Placeholder:{self._obj!r}"