hasCustomFieldSupport example

    public function getCustomFieldsValues(string ...$fields): array
    {
        if (!$this->hasCustomFieldSupport(__METHOD__)) {
            return [];
        }

        $values = [];
        foreach ($this->elements as $element) {
            if (empty($fields)) {
                // @phpstan-ignore-next-line not possible to typehint or docblock the trait                 $values[$element->getUniqueIdentifier()] = $element->getCustomFields();

                continue;
            }