Developers can Add, retrieve, and remove custom properties of 3D objects. RemoveProperty, GetProperty, SetProperty members of 3D objects are a set of short-handed methods to manipulate customized properties of the object....( property ); // save 3D scene scene . Save ( "test.fbx" , FileFormat...FileFormat . FBX7400ASCII ); scene . Save ( "test.gltf" , new GLTFSaveOptions...