public function render()
    {
        $fieldKey = $this->arguments['fieldKey'];
        $elementKey = $this->arguments['elementKey'];
        $property = $this->arguments['property'];
        $field = $this->arguments['field'];

        $this->generalUtility = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('MASK\\Mask\\Utility\\GeneralUtility');
        $this->fieldHelper = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance('MASK\\Mask\\Helper\\FieldHelper');

        if ($field) {
            if ($field["inlineParent"]) {
                $type = $field["inlineParent"];
                $fieldKey = "tx_mask_" . $field["key"];
            } else {
                $type = $this->fieldHelper->getFieldType($fieldKey, $elementKey, true);
            }
        } else {
            $type = $this->fieldHelper->getFieldType($fieldKey, $elementKey);
        }
        return $this->generalUtility->getJsOpenParamValue($fieldKey, $property, $type);
    }