### is_async_operation

    template<
        typename T,
        typename  = void,
        typename  = void,
        typename  = void,
        typename  = void,
        typename  = void,
        typename  = void,
        typename  = void,
        typename  = void,
        typename  = void>
    struct is_async_operation

##### Requirements

Header: `asio/async_result.hpp`

Convenience header: `asio.hpp`