this task

var fullname = 'John Doe';
var obj = {
  fullname: 'Colin Ihrig',
  prop: {
    fullname: 'Aurelio De Rosa',
    getFullname: function () {
      return this.fullname;
    },
  },
};

console.log(obj.prop.getFullname());

const test = obj.prop.getFullname;

console.log(test());