{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"dspan:"}]}
            dspan: DelimSpan::dummy(),
        rustc_ad_attr.item.args = rustc_ast::AttrArgs::Delimited(rustc_ast::DelimArgs {
            delim: rustc_ast::token::Delimiter::Parenthesis,