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