typing self workaround

Author: q0w

httpx/_models.py

@@ -446,6 +446,8 @@ def __setstate__(self, state: dict[str, typing.Any]) -> None:
         self.stream = UnattachedStream()
 
 
+_ResponseT = typing.TypeVar('_ResponseT', bound='Response')
+
 class Response:
     def __init__(
         self,
@@ -725,7 +727,7 @@ def has_redirect_location(self) -> bool:
             and "Location" in self.headers
         )
 
-    def raise_for_status(self) -> Response:
+    def raise_for_status(self: _ResponseT) -> _ResponseT:
         """
         Raise the `HTTPStatusError` if one occurred.
         """