function onNewSelectors(selectors)
        {
            if (!selectors)
                return Promise.resolve(false);
            return this._cssModel._computeMatchingSelectors(nodeId, selectors)
                .then(onMatchingSelectors.bind(this, selectors));
        }
@param {?Array<!WebInspector.CSSRuleSelector>} selectors
@return {!Promise<boolean>}
@this {WebInspector.CSSRule}