Name of method to invoke.
A glib.Variant 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 gio.UnixFDList or NULL.
Return location for a gio.UnixFDList or NULL.
A gio.Cancellable or NULL.
NULL if error is set. Otherwise a glib.Variant tuple with return values. Free with Variant.unref.
GException on failure.
2.30
Like g_dbus_proxy_call_sync() but also takes and returns gio.UnixFDList objects.
This method is only available on UNIX.