public void impl_update (bool allowed, bool can_acquire, bool can_release)
This function is called by the Permission implementation to update the properties of the permission.
You should never call this function except from a Permission implementation.
GObject notify signals are generated, as appropriate.
a Permission instance
the new value for the 'allowed' property
the new value for the 'can-acquire' property
the new value for the 'can-release' property