code: function( contentItem ) {
  		for( var i = 0; i < this.tabs.length; i++ ) {
  			if( this.tabs[ i ].contentItem === contentItem ) {
  				this.tabs[ i ]._$destroy();
  				this.tabs.splice( i, 1 );
  				return;
  			}
  		}
  	
  		throw new Error( 'contentItem is not controlled by this header' );
  	}
docs: Finds a tab based on the contentItem its associated with and removes it.
  
  @param   {lm.item.AbstractContentItem} contentItem
  
  @returns {void}