Block the caller until all pending replies are sent for the channel provided.
|channel ||The channel that could contain pending replies to be sent.|
|microseconds_to_wait ||Amount of time to implement the timeout or -1 if the caller is requesting to lock using default timeout provided by vortex_connection_get_timeout.|
- axl_true if all pending replies were sent (or no pending replies were found). Otherwise axl_false is returned due to connection problems (vortex_connection_is_ok) or because timeout has been reached.