--- /dev/null
+import unittest.result
+from typing import Callable, TypeVar, overload
+from typing_extensions import ParamSpec
+
+_P = ParamSpec("_P")
+_T = TypeVar("_T")
+
+def installHandler() -> None: ...
+def registerResult(result: unittest.result.TestResult) -> None: ...
+def removeResult(result: unittest.result.TestResult) -> bool: ...
+@overload
+def removeHandler(method: None = ...) -> None: ...
+@overload
+def removeHandler(method: Callable[_P, _T]) -> Callable[_P, _T]: ... # type: ignore