`gcvisitobjects_t` callbacks should return 1 for the iteration to continue instead of 0.
Type of the visitor function to be passed to :c:func:`PyUnstable_GC_VisitObjects`.
*arg* is the same as the *arg* passed to ``PyUnstable_GC_VisitObjects``.
- Return ``0`` to continue iteration, return ``1`` to stop iteration. Other return
+ Return ``1`` to continue iteration, return ``0`` to stop iteration. Other return
values are reserved for now so behavior on returning anything else is undefined.
.. versionadded:: 3.12