pub trait CSSStyleRuleMethods<D>where
    D: DomTypes,{
    // Required methods
    fn SelectorText(&self) -> DOMString;
    fn SetSelectorText(&self, value: DOMString);
    fn Style(
        &self,
        _can_gc: CanGc,
    ) -> Root<Dom<<D as DomTypes>::CSSStyleDeclaration>>;
}