{"ast_node_type":"impl","tokens":[{"end":68,"kind":"keyword","start":0,"text":"//"}]}
            // such as turbofishes (e.g. `foo::<impl Fn()>(|| {})`).
            // care about, in case we want to introduce ITIB to other positions
            StmtKind::Let(ref local) => self.with_impl_trait(ImplTraitContext::InBinding, |this| {