{"ast_node_type":"function","tokens":[{"end":49,"kind":"keyword","start":0,"text":"fn"}]}
    fn typing_env(&self) -> ty::TypingEnv<'tcx> {
impl<'tcx> layout::HasTypingEnv<'tcx> for FullyMonomorphizedLayoutCx<'tcx> {
        ty::TypingEnv::fully_monomorphized()