private function splitFieldNameAndPrefix($rawName)
    {
        $normalizedName = '';
        $prefix = '';

        if (!empty($rawName)) {
            if (strpos($rawName, CustomField::DEFAULT_PREFIX) === 0) {
                $normalizedName = substr($rawName, strlen(CustomField::DEFAULT_PREFIX));
                $prefix = CustomField::DEFAULT_PREFIX;
            } else {
                $normalizedName = $rawName;
            }
        }

        return [$normalizedName, $prefix];
    }