{"ast_node_type":"variable","tokens":[{"end":99,"kind":"keyword","start":0,"text":"let"}]}
                let let_has_ident = is_let && !is_let_mut && self.is_kw_followed_by_ident(kw::Let);
                let is_let_mut = is_let && self.look_ahead(1, |t| t.is_keyword(kw::Mut));