// your code goes here
var ItemManager = function(){
var items=[];
return {
addItem:function(item){
items.push(item);
},
debug:function(){
print(items);
}
};
};
var a=new ItemManager();
a.addItem("a");
var b=new ItemManager();
b.addItem("b");
a.debug();
b.debug();
print(a instanceof ItemManager);
print(a instanceof ItemManager);
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