@interface ISUIVisibilityOffsetHelper : ISVisibilityOffsetHelper - (struct CGRect { struct CGPoint { double x0; double x1; } x0; struct CGSize { double x0; double x1; } x1; })boundsForView:(id)a0 inScrollView:(id)a1; - (struct CGRect { struct CGPoint { double x0; double x1; } x0; struct CGSize { double x0; double x1; } x1; })visibleRectForScrollView:(id)a0; @end