public override void Release(MetaModel metaResource, ContentPool content, StructBoxer <BoundingBox> resource)
 {
 }
 public override void Release(MeshConcretize metaResource, ContentPool content, StructBoxer <BoundingBox> resource)
 {
 }
 public override void Release(SkinnedMeshFromFile metaResource, ContentPool content, StructBoxer <BoundingBox> resource)
 {
 }