lib/Ext/Container.js
function() {
        delete this.onItemAdd;

        if (this.innerHtmlElement && !this.getHtml()) {
            this.innerHtmlElement.destroy();
            delete this.innerHtmlElement;
        }

        this.on('innerstatechange', 'onItemInnerStateChange', this, {
            delegate: '> component'
        });

        return this.onItemAdd.apply(this, arguments);
    }
function() {
        delete this.onItemAdd;

        if (this.innerHtmlElement && !this.getHtml()) {
            this.innerHtmlElement.destroy();
            delete this.innerHtmlElement;
        }

        this.on('innerstatechange', 'onItemInnerStateChange', this, {
            delegate: '> component'
        });

        return this.onItemAdd.apply(this, arguments);
    }
Initialize layout and event listeners the very first time an item is added
@private