protected boolean areFiltersModified() {
    TodoConfiguration todoConfiguration = TodoConfiguration.getInstance();
    TodoFilter[] initialFilters = todoConfiguration.getTodoFilters();
    if (initialFilters.length != myFilters.size()) {
      return true;
    }
    for (TodoFilter initialFilter : initialFilters) {
      if (!myFilters.contains(initialFilter)) {
        return true;
      }
    }
    return false;
  }
protected boolean areFiltersModified()