call_call_waiting_query_sync

Description:

public bool call_call_waiting_query_sync (out bool out_status, Cancellable? cancellable = null) throws Error

Synchronously invokes the CallWaitingQuery D-Bus method on this.

The calling thread is blocked until a reply is received.

See call_call_waiting_query for the asynchronous version of this method.

this	A GdbusModemVoiceProxy.
out_status	Return location for return parameter or `null` to ignore.
cancellable	A Cancellable or `null`.

true if the call succeeded, false if error is set.