libadwaita/subclass/
breakpoint_bin.rsuse crate::BreakpointBin;
use glib::subclass::prelude::*;
use gtk::subclass::prelude::WidgetImpl;
pub trait BreakpointBinImpl: WidgetImpl {}
unsafe impl<T: BreakpointBinImpl> IsSubclassable<T> for BreakpointBin {}