@Override
  protected ExcludeFolder doAddExcludeFolder(@NotNull final VirtualFile file) {
    final boolean isCompilerOutput = isCompilerOutput(file.getUrl());
    if (isCompilerOutput) {
      myCompilerExtension.setExcludeOutput(true);
      return null;
    }
    return super.doAddExcludeFolder(file);
  }
@Override
  protected ExcludeFolder doAddExcludeFolder(@NotNull final VirtualFile file)