Mutter Reference Manual: Object Hierarchy

# Object Hierarchy

        GObject
        ├── GInitiallyUnowned
        │   ╰── ClutterActor
        │       ├── MetaBackgroundActor
        │       ├── MetaShapedTexture
        │       ╰── MetaWindowActor
        ├── MetaBackground
        ├── MetaBarrier
        ├── MetaDisplay
        ├── MetaPlugin
        ├── MetaScreen
        ├── MetaShadowFactory
        ├── MetaWindow
        ╰── MetaWorkspace
        GInterface
        ╰── MetaCullable
        GBoxed
        ├── MetaBarrierEvent
        ├── MetaKeyBinding
        ╰── MetaRectangle