{"ast_node_type":"other","tokens":[{"end":50,"kind":"keyword","start":0,"text":"hir::TyKind::UnsafeBinder(binder)"}]}
            hir::TyKind::UnsafeBinder(binder) => {
            }
                let (mut bound_vars, binders): (FxIndexMap<LocalDefId, ResolvedArg>, Vec<_>) =