Can I define a custom attributes as part of CodegenParameter

Hey RohanPalkar. It's possible to create your own templates for codegen using Mustache (https://mustache.github.io/). 

You create a template file, and then use the '-t' flag to specify the template folder to be used during code generation.

Full documentation is here: https://github.com/swagger-api/swagger-codegen ('Customizing the generator' section)