Expose FfiPtrExt methods as public API

what i want to have in my codebase:

let ptr = ffi::PyList_New(len);
let list: Bound<'_, PyList> = ptr.assume_owned(py).downcast_into_unchecked();

what i have:

let ptr = ffi::PyList_New(len);
let list: Bound<'_, PyList> = Bound::from_owned_ptr(py, ptr).downcast_into_unchecked();

where private assume_owned is just:

#[inline]
unsafe fn assume_owned(self, py: Python<'_>) -> Bound<'_, PyAny> {
    Bound::from_owned_ptr(py, self)
}

any particular reason to make FfiPtrExt private while we have public Bound?

Start by locating the private FfiPtrExt and comparing its assume_owned method with the shown Bound::from_owned_ptr call. Inspect how the method's visibility affects the public API. Done means the requested FfiPtrExt methods are publicly usable while preserving the existing ownership conversion behavior.