containsValue method

@override bool containsValue(Object? value)

Warning: This visits every single node regardless of where the value lies!

Implementation

@override
bool containsValue(Object? value) {
  var found = false;

  void visit(String k, T? v) {
    if (value == v) {
      found = true;
    }
  }

  visitRoot(visit);
  return found;
}