{"ast_node_type":"other","tokens":[{"end":98,"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(