{"ast_node_type":"function","tokens":[{"end":73,"kind":"keyword","start":0,"text":"fn"}]}
    fn new(tcx: TyCtxt<'tcx>, def_id: DefId, body: &Body<'tcx>) -> Self {
impl<'tcx> Inliner<'tcx> for NormalInliner<'tcx> {
        let typing_env = body.typing_env(tcx);