public function setAutocompleterValues($values)
    {
        if (\is_array($values)) {
            $values = $this->isAssoc($values) ? array_merge(array_keys($values), array_values($values)) : array_values($values);

            $callback = static function () use ($values) {
                return $values;
            };
        } elseif ($values instanceof \Traversable) {
            $valueCache = null;
            $callback = static function () use ($values, &$valueCache) {
                return $valueCache ?? $valueCache = iterator_to_array($values, false);
            };
        } elseif (null === $values) {
            $callback = null;
        } else {
            throw new InvalidArgumentException('Autocompleter values can be either an array, "null" or a "Traversable" object.');
        }

        return $this->setAutocompleterCallback($callback);
    }