@Override
    public boolean isFileVisible(VirtualFile file, boolean showHiddenFiles) {
      final FileType fileType = file.getFileType();
        return file.isDirectory() || (super.isFileVisible(file, showHiddenFiles)
                && FileAssociationsManager.Holder.XML_FILES_LIST.contains(fileType));
    }
@Override
    public boolean isFileVisible(VirtualFile file, boolean showHiddenFiles)