https://github.com/CpanelInc/xmlapi-php/blob/master/xmlapi.php#L2446

[willdashwood]

Just spotted what I think is a typo. Should line 2446 not read...

return $this->api2_query($username, 'AddonDomain', 'listaddondomains');

... instead of:

return $this->api2_query($username, 'Park', 'listaddondomains');

Regards,
Will