/**
* Method to escape output.
*
* @param string $output The output to escape.
*
* @return string The escaped output.
*
* @note the ENT_COMPAT flag was replaced by ENT_QUOTES in Joomla 4.0 to also escape single quotes
*
* @since 3.0
*/
public function escape($output)
{
return $output === null ? '' : htmlspecialchars($output, ENT_QUOTES, 'UTF-8');
}