java.util.ConcurrentModificationException
   at java.util.ArrayList$Itr.checkForComodification(ArrayList.java:819)
   at java.util.ArrayList$Itr.next(ArrayList.java:791)
   at org.netbeans.modules.php.editor.model.impl.ModelVisitor.handleVarComment(ModelVisitor.java:1311)
   at org.netbeans.modules.php.editor.model.impl.ModelVisitor.handleVarComments(ModelVisitor.java:1303)
   at org.netbeans.modules.php.editor.model.impl.ModelVisitor.visit(ModelVisitor.java:322)
   at org.netbeans.modules.php.editor.parser.astnodes.Program.accept(Program.java:92)
   at org.netbeans.modules.php.editor.parser.astnodes.visitors.DefaultVisitor.scan(DefaultVisitor.java:54)
   at org.netbeans.modules.php.editor.model.impl.ModelVisitor.scan(ModelVisitor.java:115)
   at org.netbeans.modules.php.editor.model.Model.getModelVisitor(Model.java:129)
   at org.netbeans.modules.php.editor.model.Model.getExtendedElements(Model.java:74)
   at org.netbeans.modules.php.editor.parser.PHPParseResult.getModel(PHPParseResult.java:92)
   at org.netbeans.modules.php.editor.parser.PHPParseResult.getModel(PHPParseResult.java:82)
   at org.netbeans.modules.php.editor.verification.PHPHintsProvider.computeHints(PHPHintsProvider.java:85)
   at org.netbeans.modules.csl.hints.infrastructure.HintsTask$1.run(HintsTask.java:126)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:583)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:150)
   at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:134)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:200)
   at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:197)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:168)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:72)
Caused: org.netbeans.modules.parsing.spi.ParseException
   at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:205)
   at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:102)
   at org.netbeans.modules.csl.hints.infrastructure.HintsTask.run(HintsTask.java:88)
   at org.netbeans.modules.csl.hints.infrastructure.HintsTask.run(HintsTask.java:74)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParserResultTask(TaskProcessor.java:558)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:734)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
   at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
   at java.util.concurrent.FutureTask.run(FutureTask.java:166)
   at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
   at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
   at java.lang.Thread.run(Thread.java:722)