Name of method to invoke.
A #GVariant tuple with parameters for the signal or %NULL if not passing parameters.
Flags from the #GDBusCallFlags enumeration.
The timeout in milliseconds (with %G_MAXINT meaning "infinite") or -1 to use the proxy default timeout.
A #GUnixFDList or %NULL.
A #GCancellable or %NULL.
A #GAsyncReadyCallback to call when the request is satisfied or %NULL if you don't care about the result of the method invocation.
The data to pass to @callback.
2.30
Like g_dbus_proxy_call() but also takes a #GUnixFDList object.
This method is only available on UNIX.