boilerplate

/**
 *  GNU GPL v2+
 * 
Since
 3.0
 *
 * 
Author
 ...
 */
class FooFileExportPrinter extends FileExportPrinter {
/**
 * @see ResultPrinter::getName
 *
 * {@inheritDoc}
 */
public function getName() {
    return '';
}

/**
 * @see FileExportPrinter::getMimeType
 *
 * {@inheritDoc}
 */
public function getMimeType( QueryResult $queryResult ) {
    return '';
}

/**
 * @see FileExportPrinter::getFileName
 *
 * {@inheritDoc}
 */
public function getFileName( QueryResult $queryResult ) {
    return '';
}

/**
 * @see ResultPrinter::getParamDefinitions
 *
 * {@inheritDoc}
 */
public function getParamDefinitions( array $definitions ) {
    $definitions = parent::getParamDefinitions( $definitions );

    $definitions[] = [
        'name' => 'foo',
        'message' => 'smw-paramdesc-foo',
        'default' => '',
    ];

    return $definitions;
}

/**
 * @see ResultPrinter::getResultText
 *
 * {@inheritDoc}
 */
protected function getResultText( QueryResult $queryResult, $outputMode ) {
    return '';
}

}