Function asio_handler_is_continuation

include/boost/asio/impl/prepend.hpp:69–74

template <typename Handler>
inline bool asio_handler_is_continuation(
    prepend_handler<Handler>* this_handler)
{
  return BOOST_ASIO_VERSIONED_NAME(handler_cont_helpers)::is_continuation(
        this_handler->handler_);
}

template <typename Signature, typename... Values>
struct prepend_signature;