NOTE: Camera instances are not automatically garbage collected. NOTE: Entity instances are not automatically garbage collected. NOTE: Image instances are not automatically garbage collected. NOTE: Material instances are not automatically garbage collected. NOTE: Mesh instances are not automatically garbage collected. NOTE: SceneParticleEmitter instances are not automatically garbage collected. NOTE: Scene instances are not automatically garbage collected. NOTE: SceneEntityInstance instances are not automatically garbage collected. NOTE: SceneImage instances are not automatically garbage collected. NOTE: SceneLabel instances are not automatically garbage collected. NOTE: SceneLight instances are not automatically garbage collected. NOTE: SceneLine instances are not automatically garbage collected. NOTE: SceneMesh instances are not automatically garbage collected. NOTE: ScenePrimitive instances are not automatically garbage collected. NOTE: SceneSound instances are not automatically garbage collected. NOTE: SceneSprite instances are not automatically garbage collected. NOTE: Texture instances are not automatically garbage collected.