public MetaDataDrawer(AnimationPlayer animationPlayer)
 {
     this.animationPlayer = animationPlayer;
     usedClipsFoldout     = new PersistedBool(persistedFoldoutUsedClips + animationPlayer.GetInstanceID());
     usedModelsFoldout    = new PersistedBool(persistedFoldoutUsedModels + animationPlayer.GetInstanceID());
 }