Where to Define Getter Methods in JavaScript

https://www.codecademy.com/paths/full-stack-engineer-career-path/tracks/fscp-javascript-syntax-part-ii/modules/fecp-learn-javascript-syntax-objects/projects/meal-maker

The hint and the help video say to define the getters and setters for the properties outside of the object where they’re defined:

const menu = {
  _courses: {
    appetizers: [],
    ...,
  },
  get appetizers() {
 
  }

That doesn’t make sense. Shouldn’t they be in the same object of the properties they’re for?