private static void addLibraryFile(VirtualFile root, String pluginName, Compressor zip, Set<String> usedFileNames) throws IOException {
    File ioFile = VfsUtilCore.virtualToIoFile(root);
    String fileName = getLibraryFileName(ioFile.getName(), usedFileNames, null);
    zip.addFile(getZipPath(pluginName, fileName), ioFile);
  }
private static void addLibraryFile(VirtualFile root, String pluginName, Compressor zip, Set<String> usedFileNames)