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use glib::subclass::prelude::*; use super::container::ContainerImpl; use ContainerClass; use StackClass; pub trait StackImpl: ContainerImpl + 'static {} unsafe impl<T: ObjectSubclass + ContainerImpl> IsSubclassable<T> for StackClass { fn override_vfuncs(&mut self) { <ContainerClass as IsSubclassable<T>>::override_vfuncs(self); } }