--- /dev/null
+from typing import Any
+
+class Settings:
+ def __new__(cls, *args, **kw) -> Settings: ...
+ def __init__(self, settings: Any | None = ...) -> None: ...
+ @classmethod
+ def get_key(cls, settings: Any | None = ...): ...
+ def replace(self, mod_settings: Any | None = ..., **kwds): ...
+
+settings: Any
+
+def apply_settings(f): ...
+
+class SettingValidationError(ValueError): ...
+
+def check_settings(settings) -> None: ...