Calling base class methods

[Sven Schwermer]

Hi,

I have a question around how to properly call base class methods and 
passing the async result back to the caller. Consider the following 
scenario:

* MMBroadbandBearerFibocomEcm inherits from MMBroadbandBearer
* MMBroadbandBearerFibocomEcm implements its own connect_3gpp and 
connect_3gpp_finish
* In certain cases MMBroadbandBearerFibocomEcm::connect_3gpp wants to 
call MMBroadbandBearer::connect_3gpp

Here's what I got for MMBroadbandBearerFibocomEcm:

static void
parent_connect_ready (MMBroadbandBearer *bearer,
                      GAsyncResult      *res,
                      GTask             *task)
{
    /* TODO how to propagate the result back to the original callback? */
}

static void
connect_3gpp (MMBroadbandBearer *self,
              MMBroadbandModem *modem,
              MMPortSerialAt *primary,
              MMPortSerialAt *secondary,
              GCancellable *cancellable,
              GAsyncReadyCallback callback,
              gpointer user_data)
{
    GTask *task = g_task_new (self, cancellable, callback, user_data);
    if (some_condition) {
        MM_BROADBAND_BEARER_CLASS 
(mm_broadband_bearer_fibocom_ecm_parent_class)->connect_3gpp (
            MM_BROADBAND_BEARER (self),
            modem,
            primary,
            secondary,
            cancellable,
            (GAsyncReadyCallback) parent_connect_ready,
            task
        );
    } else {
        /* some other code path */
    }
}

Is there a way to directly invoke the original callback from the 
parent_connect_ready callback with the result res? How would I do this 
best? I don't want to re-implement everything from 
MMBroadbandBearer::connect_3gpp_ready because that does a bunch with 
connect_succeeded which is private.

Best regards,
Sven