signal_variant,
                                         NULL);
        }
      g_variant_unref (signal_variant);
      g_list_free_full (connections, g_object_unref);
    }
  else
    {
      g_variant_builder_clear (&builder);
      g_variant_builder_clear (&invalidated_builder);
    }
z-  skeleton->priv->changed_properties = NULL;
z9  skeleton->priv->changed_properties_idle_source = NULL;
z*  g_mutex_unlock (&skeleton->priv->lock);
z