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YUI.add('my-examples', function(Y)
{
    Y.namespace('MyNamespace');
    Y.MyNamespace.MyClass = function(myConstructorArgument)
    {
        Y.MyNamespace.MyClass.superclass.constructor.call(this, conf); // apply does not work, must use call
        this.myAttribute.key = 'value'; // does not work. this.myAttribute = NULL  why?
    };
   Y.MyNamespace.MyClass.NAME = "myClass";
   Y.MyNamespace.MyClass.ATTRS =
   {
      myAttribute: {key:"defaultValue"}
   };
   Y.extend(Y.MyNamespace.MyClass, Y.Base,
   {
      initializer: function(cfg)
      {
        this.myAttribute.key = 'newValue'; // does not work, too! this.myAttribute = NULL, why?
      }
   };
},'*',{requires:['base'], skinnable:false});

var myNewClass = Y.Base.build("myClass", Y.MyNamespace.MyClass,[ ]);
var myInstance1 = new myNewClass(myConstructorArgument); // it has no attribs from ATTRS

var myNewInstance2 = new Y.MyNamespace.MyClass(myConstructorArgument); // is this in YUI3 class hierarchy allowed? It has as well no attribs from ATTRS

// (1)
var myNewClass = Y.Base.build("myClass", Y.MyNamespace.MyClass,[ ]);
var myInstance1 = new myNewClass(myConstructorArgument);
// (2)
var myInstance2 = new Y.MyNamespace.MyClass(myConstructorArgument); // is this in YUI3 class hierarchy allowed?