| 223 | using sender_concept = sender_tag; |
| 224 | |
| 225 | constexpr auto get_env() const noexcept -> __join_env_t<_Attrs const &, env_of_t<_Sender>> |
| 226 | { |
| 227 | return STDEXEC::__env::__join(__attrs_, STDEXEC::get_env(__sndr_)); |
| 228 | } |
| 229 | |
| 230 | template <__decays_to<__sender> _Self, class... _Env> |
| 231 | static consteval auto get_completion_signatures() |