##### basic_system_executor::require (6 of 7 overloads)

Obtain an executor with the specified `allocator` property.

    template<
        typename OtherAllocator>
    basic_system_executor< Blocking, Relationship, OtherAllocator > require(
        execution::allocator_t< OtherAllocator > a) const;

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

For example:

    asio::system_executor ex1;
    auto ex2 = asio::require(ex1,
        asio::execution::allocator(my_allocator));