src/anthropic/_base_client.py [1114:1139]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        self,
        *,
        cast_to: Type[ResponseT],
        options: FinalRequestOptions,
        response: httpx.Response,
        stream: bool,
        stream_cls: type[Stream[Any]] | type[AsyncStream[Any]] | None,
        retries_taken: int = 0,
    ) -> ResponseT:
        if response.request.headers.get(RAW_RESPONSE_HEADER) == "true":
            return cast(
                ResponseT,
                LegacyAPIResponse(
                    raw=response,
                    client=self,
                    cast_to=cast_to,
                    stream=stream,
                    stream_cls=stream_cls,
                    options=options,
                    retries_taken=retries_taken,
                ),
            )

        origin = get_origin(cast_to) or cast_to

        if inspect.isclass(origin) and issubclass(origin, BaseAPIResponse):
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -



src/anthropic/_base_client.py [1655:1680]:
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
        self,
        *,
        cast_to: Type[ResponseT],
        options: FinalRequestOptions,
        response: httpx.Response,
        stream: bool,
        stream_cls: type[Stream[Any]] | type[AsyncStream[Any]] | None,
        retries_taken: int = 0,
    ) -> ResponseT:
        if response.request.headers.get(RAW_RESPONSE_HEADER) == "true":
            return cast(
                ResponseT,
                LegacyAPIResponse(
                    raw=response,
                    client=self,
                    cast_to=cast_to,
                    stream=stream,
                    stream_cls=stream_cls,
                    options=options,
                    retries_taken=retries_taken,
                ),
            )

        origin = get_origin(cast_to) or cast_to

        if inspect.isclass(origin) and issubclass(origin, BaseAPIResponse):
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -