java.lang.Throwable: Locked by:
   at org.openide.filesystems.FileLock.<init>(FileLock.java:80)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.LockForFile.<init>(LockForFile.java:88)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.LockForFile.tryLock(LockForFile.java:99)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.lock(FileObj.java:308)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.copySrcToDest(CopyResourcesOnSave.java:114)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.handleCopyFileToDestDir(CopyResourcesOnSave.java:284)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.handleCopyFileToDestDir(CopyResourcesOnSave.java:272)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.fileChanged(CopyResourcesOnSave.java:164)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave$1.run(CopyResourcesOnSave.java:154)
Caused: org.openide.filesystems.FileAlreadyLockedException: /Volumes/CaseSensitive/sources/dynamicfinders/target/test-classes/META-INF/beans.xml
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.LockForFile.registerLock(LockForFile.java:111)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.LockForFile.tryLock(LockForFile.java:100)
   at org.netbeans.modules.masterfs.filebasedfs.fileobjects.FileObj.lock(FileObj.java:308)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.copySrcToDest(CopyResourcesOnSave.java:114)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.handleCopyFileToDestDir(CopyResourcesOnSave.java:284)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.handleCopyFileToDestDir(CopyResourcesOnSave.java:272)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.fileDataCreated(CopyResourcesOnSave.java:185)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave$2.run(CopyResourcesOnSave.java:175)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:641)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1123)