Forward a requirement to the underlying executor.

template<
    typename Property>
inline_or_executor< decay_t< require_result_t< const Executor &, Property > >, Blocking, InlineExceptionHandling > require(
    const Property & p,
    constraint_t< can_require< const Executor &, Property >::value >  = 0,
    constraint_t< !is_convertible< Property, execution::blocking_t >::value >  = 0,
    constraint_t< !is_convertible< Property, execution::inline_exception_handling_t >::value >  = 0) const;

Do not call this function directly. It is intended for use with the require customisation point.

For example:

boost::asio::inline_or_executor<my_executor_type> ex1 = ...;
auto ex2 = boost::asio::require(ex1,
    boost::asio::execution::relationship.continuation);