default List<PyComprehensionForComponent> getForComponents() {
    final List<PyComprehensionForComponent> list = new ArrayList<>(5);
    visitComponents(new ComprehensionElementVisitor() {
      @Override
      void visitForComponent(PyComprehensionForComponent component) {
        list.add(component);
      }
    });
    return list;
  }
default List<PyComprehensionForComponent> getForComponents()