pub unsafe extern "C" fn PyInterpreterState_ThreadHead(
interp: *mut PyInterpreterState,
) -> *mut PyThreadStateAvailable on non-
Py_LIMITED_API and non-PyPy only.pub unsafe extern "C" fn PyInterpreterState_ThreadHead(
interp: *mut PyInterpreterState,
) -> *mut PyThreadStatePy_LIMITED_API and non-PyPy only.