text: 'use strict';
  
  let user = {
      name: 'Jon',
      age: 12,
      sayHello() {
          console.log('Hello');
      },
      sayHelloWorld: function() {
          console.log('Hello world');
      },
      sayName() {
          console.log(this.name);
      },
  }
  
  let admin = {
      name: 'T-1000',
  }
  
  console.log('user', user);
  
  function sayUserName() {
      console.log(this.name);
  }
  
  user.sayHi = function() {
      console.log('Hi');
  }
  
  user.sayHi();
  user.sayHello();
  user.sayHelloWorld();
  user.sayName();
  user.sayUserName = sayUserName;
  admin.sayUserName = sayUserName;
  user.sayUserName();
  admin.sayUserName();