{"ast_node_type":"other","tokens":[{"end":37,"kind":"keyword","start":0,"text":"if"}]}
    if typeck_root_def_id != def_id {
    let typeck_root_def_id = tcx.typeck_root_def_id(def_id.to_def_id()).expect_local();
        return tcx.typeck(typeck_root_def_id);