##### Description Swagger generates instructions how to use auto-generated client code: Eg. https://github.com/swagger-api/swagger-codegen/blob/master/samples/client/petstore/java/retrofit2/docs/PetApi.md However, `Configuration` and `ApiException` used in the example code don't exist in the generated sources. So, how to use it? ##### Swagger-codegen version 2.3.0 ##### Command line used for generation I'm using gradle plugin. ##### Steps to reproduce Generate java code using Retrofit2 library from PetStore API example.