@interface SeymourUI.SessionElementBackdropView : UIView {
    void /* unknown type, empty encoding */ effectView;
    void /* unknown type, empty encoding */ contentLayoutGuide;
    void /* unknown type, empty encoding */ guideConstraints;
    void /* unknown type, empty encoding */ insets;
}

- (id)initWithFrame:(struct CGRect { struct CGPoint { double x0; double x1; } x0; struct CGSize { double x0; double x1; } x1; })a0;
- (void).cxx_destruct;
- (id)initWithCoder:(id)a0;

@end