anchor.diff:  
   [source,javascript]
   ----
  -constructor(userService: UserService)
  -{
  +constructor(userService: UserService){
   	this._userService = userService;
   	this.users = this.getUsers();
   }
  
positive.code: [source,javascript]
  ----
  getUsers(){
      this.users = this._userService.getUsers().subscribe((users) => {
          this.users = users;
      });
  }
  
negative.code:             .get('http://localhost:3000/user')
              .map((res) => { return <User[]>res.json(); });
      }
  }
  ----
  
  