How to use swagger with different instance names

[avingoyal]

Describe the bug I'm generating swagger documentation by running swag init --instanceName auth

To Reproduce Steps to reproduce the behavior:

1. Create a simple go project, using iris
2. Create a swagger folder in your project root
3. Generate multiple swagger docs using different instancenames. For example:

   cd <Project-Root>/swagger
   swag init -dir ../cmd/myproject --instanceName main
   swag init -dir ../pkg/auth --instanceName auth
   swag init -dir ../pkg/anotherPackage --instanceName anotherPackage

4. In your main.go, one should be able to register multiple instance names against differnet url paths. E.g. ginSwagger does it this way:

   router.GET("/swagger/main/*any", ginSwagger.WrapHandler(swaggerFiles.Handler, ginSwagger.InstanceName("main")))
   router.GET("/swagger/auth/*any", ginSwagger.WrapHandler(swaggerFiles.Handler, ginSwagger.InstanceName("auth")))
   router.GET("/swagger/anotherPackage/*any", ginSwagger.WrapHandler(swaggerFiles.Handler, ginSwagger.InstanceName("anotherPackage")))

   For more details, please refer to this: https://myschools.me/suguo/gin-swagger/src/commit/88c9ed2643de9f3b9fd2ac9ad03d9e63bd7721d3/example/multiple/main.go

Expected behavior I should be able to define and use different instance names as I need to consolidate and generate swagger documentation for all of my packages at one place.

Screenshots Not applicable

Desktop (please complete the following information):

• OS: MAC

iris.Version

• github.com/iris-contrib/swagger/v12 v12.2.0-alpha
• github.com/kataras/iris/v12 v12.2.0-beta7.0.20230219194850-dccd57263617
• github.com/swaggo/swag v1.8.10