Weak hands cannot be planted, meager skills have no foundation. Shallow wisdom is futile, how can one hope for a good name?扰扰从役倦，屑屑身事微。少壮轻年月，迟暮惜光辉。
messageExtra = esc_html( $extra ); // add more secure.
$this->errorCode = esc_html( $errCode );
}
/**
* Method get_message_extra()
*
* @return $messageExtra Extra messages.
*/
public function get_message_extra