code: function() {
  		var i;
  		this.setSize();
  
  		for( i = 0; i < this.contentItems.length; i++ ) {
  			this.childElementContainer.append( this.contentItems[ i ].element );
  		}
  
  		this.isInitialised = true;
  		this.emitBubblingEvent( 'itemCreated' );
  		this.emitBubblingEvent( this.type + 'Created' );
  	}
docs: The tree of content items is created in two steps: First all content items are instantiated,
  then init is called recoursively from top to bottem. This is the basic init function,
  it can be used, extended or overwritten by the content items
  
  Its behaviour depends on the content item
  
  @package private
  
  @returns {void}