code: function( contentItem ) {
  		for( var i = 0; i < this.tabs.length; i++ ) {
  			this.tabs[ i ].setActive( this.tabs[ i ].contentItem === contentItem );
  		}
  
  		this._updateTabSizes();
  	}
docs: The programmatical equivalent of clicking a Tab.
  
  @param {lm.item.AbstractContentItem} contentItem