Finishes an operation started with gio.dbus_connection.DBusConnection.newForAddress.
a #GAsyncResult obtained from the #GAsyncReadyCallback passed to gio.dbus_connection.DBusConnection.new_
a #GDBusConnection or null if error is set. Free with gobject.object.ObjectG.unref.
Finishes an operation started with gio.dbus_connection.DBusConnection.newForAddress.