code: function() {
  		if( this.isInitialised === true ) return;
  
  		var i;
  	
  		lm.items.AbstractContentItem.prototype._$init.call( this );
  		
  		for( i = 0; i < this.contentItems.length - 1; i++ ) {
  			this.contentItems[ i ].element.after( this._createSplitter( i ).element );
  		}
  	}
docs: Invoked recoursively by the layout manager. AbstractContentItem.init appends
  the contentItem's DOM elements to the container, RowOrColumn init adds splitters
  in between them
  
  @package private
  @override AbstractContentItem._$init
  @returns {void}