{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"tscx.marker.mark_span(&mut"}]}
                tscx.marker.mark_span(&mut token.span);
            &mbe::TokenTree::Token(mut token) => {
                if let token::NtIdent(ident, _) | token::NtLifetime(ident, _) = &mut token.kind {