{"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
        let try_branch = self.lang_path(LangItem::TryTraitBranch);
    fn collect_try_operator(&mut self, syntax_ptr: AstPtr<ast::Expr>, e: ast::TryExpr) -> ExprId {
        let cf_continue = self.lang_path(LangItem::ControlFlowContinue);