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....remove_property ( property ); # save 3D scene opt = GLTFSaveOptions...GLTF2 ) opt . save_extras = True scene . save ( "test-2.gltf"...