{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"ast::Expr::LoopExpr(loop_)"}]}
                ast::Expr::LoopExpr(loop_) => loop_.loop_token()?.text_range(),
            let focus_range = match expr {
                ast::Expr::WhileExpr(while_) => while_.while_token()?.text_range(),