Part I. Object Hierarchy

    GObject
    ├── GPluginLoader
       ╰── GPluginNativeLoader
    ├── GTypeModule
       ╰── GPluginNativePlugin
    ╰── GInitiallyUnowned
        ╰── GPluginPluginInfo
    GInterface
    ╰── GPluginPlugin
    GEnum
    ╰── GPluginPluginState