{"ast_node_type":"variable","tokens":[{"end":38,"kind":"keyword","start":0,"text":"///"}]}
    /// `a: Ty = 1` -> `let a: Ty = 1`
    /// Suggest add the missing `let` before the identifier in stmt
    pub(super) fn suggest_add_missing_let_for_stmt(&mut self, err: &mut Diag<'a>) {