in fatal/type/deprecated/type_list.h [3148:3156]
static constexpr bool search(
Needle &&needle, Visitor &&visitor, VArgs &&...args
) {
using first = indexed_type_tag<typename list::template at<0>, 0>;
return Comparer::compare(needle, first{}) >= 0
&& impl<Comparer, 0>(
needle, std::forward<Visitor>(visitor), std::forward<VArgs>(args)...
);
}