Method _unwrap

crates/vm/src/types/slot.rs:1732–1740

(
        zelf: &'a PyObject,
        obj: Option<PyObjectRef>,
        vm: &VirtualMachine,
    )

    #[inline]
    fn _unwrap<'a>(
        zelf: &'a PyObject,
        obj: Option<PyObjectRef>,
        vm: &VirtualMachine,
    ) -> PyResult<(&'a Py<Self>, PyObjectRef)> {
        let zelf = Self::_as_pyref(zelf, vm)?;
        let obj = vm.unwrap_or_none(obj);
        Ok((zelf, obj))
    }

    #[inline]
    fn _check<'a>(