{"ast_node_type":"other","tokens":[{"end":64,"kind":"keyword","start":0,"text":"Some(tcx.def_span(trait_def_id).shrink_to_lo()),"}]}
                Some(tcx.def_span(trait_def_id).shrink_to_lo()),
            (true, true) => (
                if tcx.features().const_trait_impl() {