{"ast_node_type":"other","tokens":[{"end":75,"kind":"keyword","start":0,"text":"if"}]}
            if tcx.hir_opt_const_param_default_param_def_id(id).is_some() {
            let id = tcx.local_def_id_to_hir_id(item_def_id);
                // In `generics_of` we set the generics' parent to be our parent's parent which means that