Swagger Annotations: Who Are They For?

While looking at cleaning up dependencies for my generated models, I saw that swagger annotations are always imported and would require a code change to exclude from imports. My question is: why is this a feature at all?

https://github.com/swagger-api/swagger-core/wiki/Swagger-2.X---Annotations

My understanding of these annotations is that their main purpose is to support a code first style of programming - i.e. where you use your own hand coded models with these annotations to generate a spec for consumers. But with codegen we are using design first programming. The spec is your input, not your output. So why would I ever need swagger annotations put on a model that is being generated from a spec that already exists?

Start with the generated-model import behavior described in the issue and read the linked Swagger 2.X annotations documentation. Determine whether annotations are required for generated models and define the desired exclusion behavior before making any change; no file or test is named.