@Override
        public boolean isFileVisible(VirtualFile file, boolean showHiddenFiles) {
          // dotIdeaStoragePath may be a path to the project.ipr file in IPR-based projects
          if (file.getPath().equals(myDotIdeaStoragePath)) return true;
          return file.isDirectory() && super.isFileVisible(file, showHiddenFiles);
        }
@Override
        public boolean isFileVisible(VirtualFile file, boolean showHiddenFiles)