/** * @see Filter::getSupportedTransformations() */ function getSupportedTransformations() { $inputType = 'metadata::lib.pkp.classes.metadata.nlm.NlmNameSchema(*)'; $outputType = 'primitive::string'; $singleMode = array($inputType, $outputType); $multiMode = array($inputType . '[]', $outputType); return parent::getSupportedTransformations($singleMode, $multiMode); }