* @param $msg Mixed: message key (string) for page text, or a Message object
* @param $params Array: message parameters; ignored if $msg is a Message object
*/
public function showErrorPage( $title, $msg, $params = array() ) {
* @param $msg Mixed: message key (string) for page text, or a Message object
* @param $params Array: message parameters; ignored if $msg is a Message object
*/
public function showErrorPage( $title, $msg, $params = array() ) {