{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"ecx.sess.prof.generic_activity_with_arg_recorder(\"expand_proc_macro\","}]}
            ecx.sess.prof.generic_activity_with_arg_recorder("expand_proc_macro", |recorder| {
        let _timer =
                recorder.record_arg_with_span(ecx.sess.source_map(), ecx.expansion_descr(), span);