remove sms listener and get sms code para meters are undefined when I wrote example main file class

[KOSURUUDAYSAIKUMAR]

The method 'removeSmsListener' isn't defined for the type 'SmartAuth'.
Try correcting the name to the name of an existing method, or defining a method named 'removeSmsListener'.

The method 'getSmsCode' isn't defined for the type 'SmartAuth'.
Try correcting the name to the name of an existing method, or defining a method named 'getSmsCode'.