/**
* Encode an internationalized domain name
*
* @param string $strDomain The domain name
*
* @return string The encoded domain name
*
* @deprecated Deprecated since Contao 4.0, to be removed in Contao 5.0.
* Use Idna::encode() instead.
*/
protected function idnaEncode($strDomain)
{
@trigger_error('Using System::idnaEncode() has been deprecated and will no longer work in Contao 5.0. Use Idna::encode() instead.', E_USER_DEPRECATED);
return \Idna::encode($strDomain);
}