__new__ return type too

Author: MarcoGorelli

pandas-stubs/core/indexes/period.pyi

@@ -32,7 +32,7 @@ class PeriodIndex(DatetimeIndexOpsMixin[pd.Period, np.object_], PeriodIndexField
         dtype: Dtype | None = None,
         copy: bool = False,
         name: Hashable | None = None,
-    ): ...
+    ) -> Self: ...
     @property
     def values(self) -> np.ndarray[tuple[int], np.dtype[np.object_]]: ...
     @overload