<?php

class Chart{ 
    private $id; 
     private $name; 
     private $lazyLoadedUser; 
 
     public function __construct($id, $name){ 
         $this->id = $id; 
         $this->name = $name; 
     } 
 
     public function setName($name){ 
         return $this->name = $name; 
     }        
 
     public function getName(){ 
         return $this->name; 
     } 
 
     public function setUser($userOrProvider){ 
         $this->lazyLoadedUser = new LazyLoader($userOrProvider); 
     } 
 
     public function getUser(){ 
         return call_user_func($this->lazyLoadedUser); 
     }  
 } 

?>