@Override
      public boolean isFileVisible(VirtualFile file, boolean showHiddenFiles) {
        return super.isFileVisible(file, showHiddenFiles) &&
               (file.isDirectory() || "xml".equals(file.getExtension()) || FileTypeRegistry.getInstance().isFileOfType(file, ArchiveFileType.INSTANCE));
      }
@Override
      public boolean isFileVisible(VirtualFile file, boolean showHiddenFiles)