* It defaults to NULL, which means using US-ASCII and encoding all characters outside of the ASCII range using
* their xml character entity representation (this has the benefit that line end characters will not be mangled in
* the transfer, a CR-LF will be preserved as well as a singe LF).
- * Valid values are 'US-ASCII', 'UTF-8' and 'ISO-8859-1'
+ * Valid values are 'US-ASCII', 'UTF-8' and 'ISO-8859-1'
*/
public $request_charset_encoding = '';