{"ast_node_type":"variable","tokens":[{"end":75,"kind":"keyword","start":0,"text":"let"}]}
                let if_expr_in_file = InFile::new(file_id, if_expr.into());
                let focus_range = if_expr.if_token()?.text_range();
                Some(expr_to_nav(db, if_expr_in_file, Some(focus_range)))