private function addFieldChoiceOptions(array &$options, array $formFieldConfiguration, array $fieldConfiguration)
    {
        if (isset($formFieldConfiguration['options'])) {
            $fieldConfiguration['options'] = $formFieldConfiguration['options'];
        }

        if (isset($fieldConfiguration['options'])) {
            $options['choices'] = array();
            foreach ($fieldConfiguration['options'] as $option) {
                $options['choices'][$option['label']] = $option['value'];
            }
        }
    }