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:322)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.copySrcToDest(CopyResourcesOnSave.java:114)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.handleCopyFileToDestDir(CopyResourcesOnSave.java:288)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.handleCopyFileToDestDir(CopyResourcesOnSave.java:276)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.fileDataCreated(CopyResourcesOnSave.java:189)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave$2.run(CopyResourcesOnSave.java:179)
Caused: org.openide.filesystems.FileAlreadyLockedException: /Users/alc/NetBeansProjects/kahler-edi/edi-api/target/test-classes/com/kahlerdesign/edi/order_receipt_test.csv
   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:322)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.copySrcToDest(CopyResourcesOnSave.java:114)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.handleCopyFileToDestDir(CopyResourcesOnSave.java:288)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.handleCopyFileToDestDir(CopyResourcesOnSave.java:276)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave.fileChanged(CopyResourcesOnSave.java:168)
   at org.netbeans.modules.maven.cos.CopyResourcesOnSave$1.run(CopyResourcesOnSave.java:158)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1369)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:1907)