Declared in <llvm/Support/Alignment.h>
template<typename _Fn>
constexpr
auto
and_then(_Fn&& __f) const &;template<typename _Fn>
constexpr
auto
and_then(_Fn&& __f) const &&;template<typename _Fn>
constexpr
auto
and_then(_Fn&& __f) &&;template<typename _Fn>
constexpr
auto
and_then(_Fn&& __f) &;