private static void makeAndAddLibraryJar(
     final VirtualFile virtualFile,
     final File zipFile,
     final String pluginName,
     final ZipOutputStream zos,
     final Set<String> usedJarNames,
     final ProgressIndicator progressIndicator,
     final String preferredName)
     throws IOException {
   File libraryJar = FileUtil.createTempFile(TEMP_PREFIX, JAR_EXTENSION);
   libraryJar.deleteOnExit();
   ZipOutputStream jar = null;
   try {
     jar = new JarOutputStream(new BufferedOutputStream(new FileOutputStream(libraryJar)));
     ZipUtil.addFileOrDirRecursively(
         jar,
         libraryJar,
         VfsUtilCore.virtualToIoFile(virtualFile),
         "",
         createFilter(progressIndicator, FileTypeManager.getInstance()),
         null);
   } finally {
     if (jar != null) jar.close();
   }
   final String jarName =
       getLibraryJarName(
           virtualFile.getName() + JAR_EXTENSION,
           usedJarNames,
           preferredName == null ? null : preferredName + JAR_EXTENSION);
   ZipUtil.addFileOrDirRecursively(
       zos,
       zipFile,
       libraryJar,
       getZipPath(pluginName, jarName),
       createFilter(progressIndicator, null),
       null);
 }
 private static void addLibraryJar(
     final VirtualFile virtualFile,
     final File zipFile,
     final String pluginName,
     final ZipOutputStream zos,
     final Set<String> usedJarNames,
     final ProgressIndicator progressIndicator)
     throws IOException {
   File ioFile = VfsUtil.virtualToIoFile(virtualFile);
   final String jarName = getLibraryJarName(ioFile.getName(), usedJarNames, null);
   ZipUtil.addFileOrDirRecursively(
       zos,
       zipFile,
       ioFile,
       getZipPath(pluginName, jarName),
       createFilter(progressIndicator, null),
       null);
 }