add( $args );
}
}
/**
* Appends data to an XML response based on given arguments.
*
* With `$args` defaults, extra data output would be:
*
*
* <$what id='$id' position='$position'>
*
*
*
*
* @since 2.1.0
*
* @param string|array $args {
* Optional. An array or string of XML response arguments.
*
* @type string $what XML-RPC response type. Used as a child element of ``.
* Default 'object' (`