Removing child objects of loaded gltf model from memory

Questions
2

example

removePart = character.model.getObjectByName('Cube004_6');
let parent = removePart.parent;
parent.remove(removePart);

cc https://discourse.threejs.org/t/load-change-and-remove-parts-of-loaded-gltf-by-name-from-scene-in-three-js/11241/2