Checks if this element or any of its parents match the CSS selectors.
bool matchesWithAncestors(String selectors) { var elem = this; do { if (elem.matches(selectors)) return true; elem = elem.parent; } while (elem != null); return false; }
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https://api.dartlang.org/stable/2.0.0/dart-html/Element/matchesWithAncestors.html