protected boolean addToAttributeValueSet ( final String value ) { final Collection < AbstractHtml5SharedObject > sharedObjects = getSharedObjects ( ) ; boolean listenerInvoked = false ; final Collection < WriteLock > writeLocks = lockAndGetWriteLocks ( ) ; try { final boolean added = getAttributeValueSet ( ) . add ( value ) ; if ( added ) { setModified ( true ) ; invokeValueChangeListeners ( sharedObjects ) ; listenerInvoked = true ; } } finally { for ( final Lock lock : writeLocks ) { lock . unlock ( ) ; } } pushQueues ( sharedObjects , listenerInvoked ) ; return listenerInvoked ; }
adds to the attribute value set .