title: How to use Codable protocol in objective c data model class?
body: <p>I am working on mix and match iOS source code. I have implemented codable for swift data model class which reduces the burden of writing parser logic.  I tried to conform my objective c class to codable protcol which in turn thrown an error "Cannot find protocol declaration for 'Codable'". Is there any way to use this swift protocol into objective c class? Or Is there any other objective c api that provides the same capability as Codable?  The idea is to make the parsing logic same across swift and objective c classes.</p>