{"ast_node_type":"variable","tokens":[{"end":87,"kind":"keyword","start":0,"text":"let"}]}
                let mutability = Mutability::from_mutable(inner.mut_token().is_some());
                let lifetime = inner.lifetime().map(|lt| self.lower_lifetime_ref(lt));
                TypeRef::Reference(Box::new(RefType { ty: inner_ty, lifetime, mutability }))