{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"//"}]}
            // Check scope of binding.
        impl<'a, 'tcx> LetVisitor<'a, 'tcx> {
            fn is_sub_scope(&self, sub_id: hir::ItemLocalId, super_id: hir::ItemLocalId) -> bool {