Finishes an operation started with g_dbus_proxy_call(). Since 2.26
A GAsyncResult obtained from the GAsyncReadyCallback passed to g_dbus_proxy_call().
NULL if error is set. Otherwise a GVariant tuple with return values. Free with g_variant_unref().
GException on failure.
See Implementation
Finishes an operation started with g_dbus_proxy_call(). Since 2.26