code: function( startMenu ) {
  		if ( !startMenu ) {
  			startMenu = this.active ? this.active.parent() : this.element;
  		}
  
  		startMenu.find( ".ui-menu" )
  			.hide()
  			.attr( "aria-hidden", "true" )
  			.attr( "aria-expanded", "false" );
  	}
docs: With no arguments, closes the currently active menu - if nothing is active it closes all menus.  If passed an argument, it will search for menus BELOW