boost::asio::any_completion_executor::require

template<typename Property>
any_executor<prefer_only</* implementation-defined */>, prefer_only</* implementation-defined */>, prefer_only</* implementation-defined */>, prefer_only</* implementation-defined */>>
require(Property const& p)
requires find_convertible_requirable_property<Property>::value;

template<typename Property>
any_completion_executor
require(
    Property const& p,
    int = 0);